Extract general popups markup to its own component

Split popups controllers into separate components Implemented storybooks for all project's popups
2024-11-23 00:22:57 +05:30 · 2020-07-06 19:29:56 +03:00 · 2020-07-06 19:29:56 +03:00 · 82abe0a746
commit 82abe0a746
parent 28ccab8a98
39 changed files with 834 additions and 534 deletions
--- a/.env.tpl
+++ b/.env.tpl
@ -1,4 +1,4 @@
-SENTRY_DSN=https://<key>@sentry.io/<project>
+SENTRY_DSN=

 CROWDIN_API_KEY=abc

--- a/packages/app/components/auth/actions.ts
+++ b/packages/app/components/auth/actions.ts
@ -21,7 +21,7 @@ import {
 } from 'app/services/api/signup';
 import dispatchBsod from 'app/components/ui/bsod/dispatchBsod';
 import { create as createPopup } from 'app/components/ui/popup/actions';
-import ContactForm from 'app/components/contact/ContactForm';
+import ContactForm from 'app/components/contact';
 import { Account } from 'app/components/accounts/reducer';
 import { ThunkAction, Dispatch } from 'app/reducers';
 import { Resp } from 'app/services/request';
--- a/packages/app/components/contact/ContactForm.test.tsx
+++ b/packages/app/components/contact/ContactForm.test.tsx
@ -2,11 +2,11 @@ import React from 'react';
 import expect from 'app/test/unexpected';
 import sinon from 'sinon';
 import { render, fireEvent, waitFor, screen } from '@testing-library/react';
-import feedback from 'app/services/api/feedback';
+import * as feedback from 'app/services/api/feedback';
 import { User } from 'app/components/user';
 import { TestContextProvider } from 'app/shell';

-import { ContactForm } from './ContactForm';
+import ContactForm from './ContactForm';

 beforeEach(() => {
    sinon.stub(feedback, 'send').returns(Promise.resolve() as any);
@ -18,11 +18,9 @@ afterEach(() => {

 describe('ContactForm', () => {
    it('should contain Form', () => {
-        const user = {} as User;
-
        render(
            <TestContextProvider>
-                <ContactForm user={user} />
+                <ContactForm />
            </TestContextProvider>,
        );

@ -49,14 +47,14 @@ describe('ContactForm', () => {
    });

    describe('when rendered with user', () => {
-        const user = {
+        const user: Pick<User, 'email'> = {
            email: 'foo@bar.com',
-        } as User;
+        };

        it('should render email field with user email', () => {
            render(
-                <TestContextProvider>
-                    <ContactForm user={user} />
+                <TestContextProvider state={{ user }}>
+                    <ContactForm />
                </TestContextProvider>,
            );

@ -65,13 +63,13 @@ describe('ContactForm', () => {
    });

    it('should submit and then hide form and display success message', async () => {
-        const user = {
+        const user: Pick<User, 'email'> = {
            email: 'foo@bar.com',
-        } as User;
+        };

        render(
-            <TestContextProvider>
-                <ContactForm user={user} />
+            <TestContextProvider state={{ user }}>
+                <ContactForm />
            </TestContextProvider>,
        );

@ -113,9 +111,9 @@ describe('ContactForm', () => {
    });

    it('should show validation messages', async () => {
-        const user = {
+        const user: Pick<User, 'email'> = {
            email: 'foo@bar.com',
-        } as User;
+        };

        (feedback.send as any).callsFake(() =>
            Promise.reject({
@ -125,8 +123,8 @@ describe('ContactForm', () => {
        );

        render(
-            <TestContextProvider>
-                <ContactForm user={user} />
+            <TestContextProvider state={{ user }}>
+                <ContactForm />
            </TestContextProvider>,
        );

--- a/packages/app/components/contact/ContactForm.tsx
+++ b/packages/app/components/contact/ContactForm.tsx
@ -1,202 +1,43 @@
-import React from 'react';
-import { connect } from 'react-redux';
-import clsx from 'clsx';
-import { FormattedMessage as Message, defineMessages } from 'react-intl';
-import { Input, TextArea, Button, Form, FormModel, Dropdown } from 'app/components/ui/form';
-import feedback from 'app/services/api/feedback';
-import icons from 'app/components/ui/icons.scss';
-import popupStyles from 'app/components/ui/popup/popup.scss';
+import React, { ComponentType, useCallback, useRef, useState } from 'react';
+import { useSelector } from 'react-redux';
+
+import { send as sendFeedback } from 'app/services/api/feedback';
 import { RootState } from 'app/reducers';
 import logger from 'app/services/logger';
-import { User } from 'app/components/user';

-import styles from './contactForm.scss';
+import ContactFormPopup from './ContactFormPopup';
+import SuccessContactFormPopup from './SuccessContactFormPopup';

-const CONTACT_CATEGORIES = {
-    // TODO: сюда позже проставить реальные id категорий с backend
-    0: <Message key="cannotAccessMyAccount" defaultMessage="Can not access my account" />,
-    1: <Message key="foundBugOnSite" defaultMessage="I found a bug on the site" />,
-    2: <Message key="improvementsSuggestion" defaultMessage="I have a suggestion for improving the functional" />,
-    3: <Message key="integrationQuestion" defaultMessage="Service integration question" />,
-    4: <Message key="other" defaultMessage="Other" />,
-};
-
-const labels = defineMessages({
-    subject: 'Subject',
-    email: 'E‑mail',
-    message: 'Message',
-    whichQuestion: 'What are you interested in?',
-
-    send: 'Send',
-
-    close: 'Close',
-});
-
-export class ContactForm extends React.Component<
-    {
-        onClose: () => void;
-        user: User;
-    },
-    {
-        isLoading: boolean;
-        isSuccessfullySent: boolean;
-        lastEmail: string | null;
-    }
-> {
-    static defaultProps = {
-        onClose() {},
-    };
-
-    state = {
-        isLoading: false,
-        isSuccessfullySent: false,
-        lastEmail: null,
-    };
-
-    form = new FormModel();
-
-    render() {
-        const { isSuccessfullySent } = this.state || {};
-        const { onClose } = this.props;
-
-        return (
-            <div data-testid="feedbackPopup" className={isSuccessfullySent ? styles.successState : styles.contactForm}>
-                <div className={popupStyles.popup}>
-                    <div className={popupStyles.header}>
-                        <h2 className={popupStyles.headerTitle}>
-                            <Message key="title" defaultMessage="Feedback form" />
-                        </h2>
-                        <span
-                            className={clsx(icons.close, popupStyles.close)}
-                            onClick={onClose}
-                            data-testid="feedback-popup-close"
-                        />
-                    </div>
-
-                    {isSuccessfullySent ? this.renderSuccess() : this.renderForm()}
-                </div>
-            </div>
-        );
-    }
-
-    renderForm() {
-        const { form } = this;
-        const { user } = this.props;
-        const { isLoading } = this.state;
-
-        return (
-            <Form form={form} onSubmit={this.onSubmit} isLoading={isLoading}>
-                <div className={popupStyles.body}>
-                    <div className={styles.philosophicalThought}>
-                        <Message
-                            key="philosophicalThought"
-                            defaultMessage="Properly formulated question — half of the answer"
-                        />
-                    </div>
-
-                    <div className={styles.formDisclaimer}>
-                        <Message
-                            key="disclaimer"
-                            defaultMessage="Please formulate your feedback providing as much useful information, as possible to help us understand your problem and solve it"
-                        />
-                        <br />
-                    </div>
-
-                    <div className={styles.pairInputRow}>
-                        <div className={styles.pairInput}>
-                            <Input {...form.bindField('subject')} required label={labels.subject} skin="light" />
-                        </div>
-
-                        <div className={styles.pairInput}>
-                            <Input
-                                {...form.bindField('email')}
-                                required
-                                label={labels.email}
-                                type="email"
-                                skin="light"
-                                defaultValue={user.email}
-                            />
-                        </div>
-                    </div>
-
-                    <div className={styles.formMargin}>
-                        <Dropdown
-                            {...form.bindField('category')}
-                            label={labels.whichQuestion}
-                            items={CONTACT_CATEGORIES}
-                            block
-                        />
-                    </div>
-
-                    <TextArea
-                        {...form.bindField('message')}
-                        required
-                        label={labels.message}
-                        skin="light"
-                        minRows={6}
-                        maxRows={6}
-                    />
-                </div>
-
-                <div className={styles.footer}>
-                    <Button label={labels.send} block type="submit" disabled={isLoading} />
-                </div>
-            </Form>
-        );
-    }
-
-    renderSuccess() {
-        const { lastEmail: email } = this.state;
-        const { onClose } = this.props;
-
-        return (
-            <div>
-                <div className={styles.successBody}>
-                    <span className={styles.successIcon} />
-                    <div className={styles.successDescription}>
-                        <Message
-                            key="youMessageReceived"
-                            defaultMessage="Your message was received. We will respond to you shortly. The answer will come to your E‑mail:"
-                        />
-                    </div>
-                    <div className={styles.sentToEmail}>{email}</div>
-                </div>
-
-                <div className={styles.footer}>
-                    <Button label={labels.close} block onClick={onClose} data-testid="feedback-popup-close-button" />
-                </div>
-            </div>
-        );
-    }
-
-    onSubmit = (): Promise<void> => {
-        if (this.state.isLoading) {
-            return Promise.resolve();
-        }
-
-        this.setState({ isLoading: true });
-
-        return feedback
-            .send(this.form.serialize())
-            .then(() =>
-                this.setState({
-                    isSuccessfullySent: true,
-                    lastEmail: this.form.value('email'),
-                }),
-            )
-            .catch((resp) => {
-                if (resp.errors) {
-                    this.form.setErrors(resp.errors);
-
-                    return;
-                }
-
-                logger.warn('Error sending feedback', resp);
-            })
-            .finally(() => this.setState({ isLoading: false }));
-    };
+interface Props {
+    onClose?: () => void;
 }

-export default connect((state: RootState) => ({
-    user: state.user,
-}))(ContactForm);
+const ContactForm: ComponentType<Props> = ({ onClose }) => {
+    const userEmail = useSelector((state: RootState) => state.user.email);
+    const usedEmailRef = useRef(userEmail); // Use ref to avoid unneeded redraw
+    const [isSent, setIsSent] = useState<boolean>(false);
+    const onSubmit = useCallback(
+        (params: Parameters<typeof sendFeedback>[0]): Promise<void> =>
+            sendFeedback(params)
+                .then(() => {
+                    setIsSent(true);
+                    usedEmailRef.current = params.email;
+                })
+                .catch((resp) => {
+                    if (!resp.errors) {
+                        logger.warn('Error sending feedback', resp);
+                    }
+
+                    throw resp;
+                }),
+        [],
+    );
+
+    return isSent ? (
+        <SuccessContactFormPopup email={usedEmailRef.current} onClose={onClose} />
+    ) : (
+        <ContactFormPopup initEmail={userEmail} onSubmit={onSubmit} onClose={onClose} />
+    );
+};
+
+export default ContactForm;
--- a/packages/app/components/contact/ContactFormPopup.story.tsx
+++ b/packages/app/components/contact/ContactFormPopup.story.tsx
@ -0,0 +1,16 @@
+import React from 'react';
+import { storiesOf } from '@storybook/react';
+import { action } from '@storybook/addon-actions';
+
+import ContactFormPopup from './ContactFormPopup';
+
+storiesOf('Components/Popups', module).add('ContactFormPopup', () => (
+    <ContactFormPopup
+        onSubmit={(params) => {
+            action('onSubmit')(params);
+
+            return Promise.resolve();
+        }}
+        onClose={action('onClose')}
+    />
+));
--- a/packages/app/components/contact/ContactFormPopup.test.tsx
+++ b/packages/app/components/contact/ContactFormPopup.test.tsx
@ -0,0 +1,146 @@
+import React from 'react';
+import sinon from 'sinon';
+import { render, fireEvent, waitFor, screen } from '@testing-library/react';
+
+import expect from 'app/test/unexpected';
+import * as feedback from 'app/services/api/feedback';
+import { TestContextProvider } from 'app/shell';
+
+import ContactFormPopup from './ContactFormPopup';
+
+beforeEach(() => {
+    sinon.stub(feedback, 'send').returns(Promise.resolve() as any);
+});
+
+afterEach(() => {
+    (feedback.send as any).restore();
+});
+
+describe('ContactFormPopup', () => {
+    const email = 'foo@bar.com';
+
+    it('should contain Form', () => {
+        render(
+            <TestContextProvider>
+                <ContactFormPopup />
+            </TestContextProvider>,
+        );
+
+        expect(screen.getAllByRole('textbox').length, 'to be greater than', 1);
+
+        expect(screen.getByRole('button', { name: /Send/ }), 'to have property', 'type', 'submit');
+
+        [
+            {
+                label: 'subject',
+                name: 'subject',
+            },
+            {
+                label: 'E‑mail',
+                name: 'email',
+            },
+            {
+                label: 'message',
+                name: 'message',
+            },
+        ].forEach((el) => {
+            expect(screen.getByLabelText(el.label, { exact: false }), 'to have property', 'name', el.name);
+        });
+    });
+
+    describe('when email provided', () => {
+        it('should render email field with user email', () => {
+            render(
+                <TestContextProvider>
+                    <ContactFormPopup initEmail={email} />
+                </TestContextProvider>,
+            );
+
+            expect(screen.getByDisplayValue(email), 'to be a', HTMLInputElement);
+        });
+    });
+
+    it('should call the onSubmit callback when submitted', async () => {
+        let onSubmitResolvePromise: Function;
+        const onSubmitMock = jest.fn(
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+            (form): Promise<void> =>
+                new Promise((resolve) => {
+                    onSubmitResolvePromise = resolve;
+                }),
+        );
+
+        render(
+            <TestContextProvider>
+                <ContactFormPopup initEmail={email} onSubmit={onSubmitMock} />
+            </TestContextProvider>,
+        );
+
+        fireEvent.change(screen.getByLabelText(/subject/i), {
+            target: {
+                value: 'subject',
+            },
+        });
+        fireEvent.change(screen.getByLabelText(/message/i), {
+            target: {
+                value: 'the message',
+            },
+        });
+
+        const button = screen.getByRole('button', { name: 'Send' });
+        expect(button, 'to have property', 'disabled', false);
+
+        fireEvent.click(button);
+
+        expect(button, 'to have property', 'disabled', true);
+        expect(onSubmitMock.mock.calls.length, 'to be', 1);
+        expect(onSubmitMock.mock.calls[0][0], 'to equal', {
+            subject: 'subject',
+            email,
+            category: '',
+            message: 'the message',
+        });
+
+        // @ts-ignore
+        onSubmitResolvePromise();
+
+        await waitFor(() => {
+            expect(button, 'to have property', 'disabled', false);
+        });
+    });
+
+    it('should display error messages', async () => {
+        const onSubmitMock = jest.fn(
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+            (form): Promise<void> =>
+                Promise.reject({
+                    success: false,
+                    errors: { email: 'error.email_invalid' },
+                }),
+        );
+
+        render(
+            <TestContextProvider>
+                <ContactFormPopup initEmail="invalid@email" onSubmit={onSubmitMock} />
+            </TestContextProvider>,
+        );
+
+        fireEvent.change(screen.getByLabelText(/subject/i), {
+            target: {
+                value: 'subject',
+            },
+        });
+
+        fireEvent.change(screen.getByLabelText(/message/i), {
+            target: {
+                value: 'the message',
+            },
+        });
+
+        fireEvent.click(screen.getByRole('button', { name: 'Send' }));
+
+        await waitFor(() => {
+            expect(screen.getByRole('alert'), 'to have property', 'innerHTML', 'E‑mail is invalid');
+        });
+    });
+});
--- a/packages/app/components/contact/ContactFormPopup.tsx
+++ b/packages/app/components/contact/ContactFormPopup.tsx
@ -0,0 +1,129 @@
+import React, { ComponentType, useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { FormattedMessage as Message, defineMessages } from 'react-intl';
+
+import Popup from 'app/components/ui/popup';
+import { Input, TextArea, Button, Form, FormModel, Dropdown } from 'app/components/ui/form';
+
+import styles from './contactForm.scss';
+
+const CONTACT_CATEGORIES = {
+    // TODO: сюда позже проставить реальные id категорий с backend
+    0: <Message key="cannotAccessMyAccount" defaultMessage="Can not access my account" />,
+    1: <Message key="foundBugOnSite" defaultMessage="I found a bug on the site" />,
+    2: <Message key="improvementsSuggestion" defaultMessage="I have a suggestion for improving the functional" />,
+    3: <Message key="integrationQuestion" defaultMessage="Service integration question" />,
+    4: <Message key="other" defaultMessage="Other" />,
+};
+
+const labels = defineMessages({
+    subject: 'Subject',
+    email: 'E‑mail',
+    message: 'Message',
+    whichQuestion: 'What are you interested in?',
+});
+
+interface Props {
+    initEmail?: string;
+    onSubmit?: (params: { subject: string; email: string; category: string; message: string }) => Promise<void>;
+    onClose?: () => void;
+}
+
+const ContactFormPopup: ComponentType<Props> = ({ initEmail = '', onSubmit, onClose }) => {
+    const form = useMemo(() => new FormModel(), []);
+    const [isLoading, setIsLoading] = useState<boolean>(false);
+    const isMountedRef = useRef<boolean>(true);
+    const onSubmitCallback = useCallback((): Promise<void> => {
+        if (isLoading || !onSubmit) {
+            return Promise.resolve();
+        }
+
+        setIsLoading(true);
+
+        return (
+            // @ts-ignore serialize() returns Record<string, string>, but we exactly know returning keys
+            onSubmit(form.serialize())
+                .catch((resp) => {
+                    if (resp.errors) {
+                        form.setErrors(resp.errors);
+
+                        return;
+                    }
+                })
+                .finally(() => isMountedRef.current && setIsLoading(false))
+        );
+    }, [isLoading, onSubmit]);
+
+    useEffect(
+        () => () => {
+            isMountedRef.current = false;
+        },
+        [],
+    );
+
+    return (
+        <Popup
+            title={<Message key="title" defaultMessage="Feedback form" />}
+            wrapperClassName={styles.contactFormBoundings}
+            onClose={onClose}
+            data-testid="feedbackPopup"
+        >
+            <Form form={form} onSubmit={onSubmitCallback} isLoading={isLoading}>
+                <div className={styles.body}>
+                    <div className={styles.philosophicalThought}>
+                        <Message
+                            key="philosophicalThought"
+                            defaultMessage="Properly formulated question — half of the answer"
+                        />
+                    </div>
+
+                    <div className={styles.formDisclaimer}>
+                        <Message
+                            key="disclaimer"
+                            defaultMessage="Please formulate your feedback providing as much useful information, as possible to help us understand your problem and solve it"
+                        />
+                        <br />
+                    </div>
+
+                    <div className={styles.pairInputRow}>
+                        <div className={styles.pairInput}>
+                            <Input {...form.bindField('subject')} required label={labels.subject} skin="light" />
+                        </div>
+
+                        <div className={styles.pairInput}>
+                            <Input
+                                {...form.bindField('email')}
+                                required
+                                label={labels.email}
+                                type="email"
+                                skin="light"
+                                defaultValue={initEmail}
+                            />
+                        </div>
+                    </div>
+
+                    <div className={styles.formMargin}>
+                        <Dropdown
+                            {...form.bindField('category')}
+                            label={labels.whichQuestion}
+                            items={CONTACT_CATEGORIES}
+                            block
+                        />
+                    </div>
+
+                    <TextArea
+                        {...form.bindField('message')}
+                        required
+                        label={labels.message}
+                        skin="light"
+                        minRows={6}
+                        maxRows={6}
+                    />
+                </div>
+
+                <Button label={<Message key="send" defaultMessage="Send" />} block type="submit" disabled={isLoading} />
+            </Form>
+        </Popup>
+    );
+};
+
+export default ContactFormPopup;
--- a/packages/app/components/contact/ContactLink.tsx
+++ b/packages/app/components/contact/ContactLink.tsx
@ -1,7 +1,7 @@
 import React from 'react';
 import { connect } from 'react-redux';
 import { create as createPopup } from 'app/components/ui/popup/actions';
-import ContactForm from './ContactForm';
+import ContactForm from 'app/components/contact';

 type Props = React.AnchorHTMLAttributes<HTMLAnchorElement> & {
    createContactPopup: () => void;
--- a/packages/app/components/contact/SuccessContactFormPopup.story.tsx
+++ b/packages/app/components/contact/SuccessContactFormPopup.story.tsx
@ -0,0 +1,9 @@
+import React from 'react';
+import { storiesOf } from '@storybook/react';
+import { action } from '@storybook/addon-actions';
+
+import SuccessContactFormPopup from './SuccessContactFormPopup';
+
+storiesOf('Components/Popups', module).add('SuccessContactFormPopup', () => (
+    <SuccessContactFormPopup email="email@ely.by" onClose={action('onClose')} />
+));
--- a/packages/app/components/contact/SuccessContactFormPopup.tsx
+++ b/packages/app/components/contact/SuccessContactFormPopup.tsx
@ -0,0 +1,38 @@
+import React, { ComponentProps, ComponentType } from 'react';
+import { FormattedMessage as Message } from 'react-intl';
+
+import Popup from 'app/components/ui/popup';
+import { Button } from 'app/components/ui/form';
+
+import styles from './contactForm.scss';
+
+interface Props {
+    email: string;
+    onClose?: ComponentProps<typeof Popup>['onClose'];
+}
+
+const SuccessContactFormPopup: ComponentType<Props> = ({ email, onClose }) => (
+    <Popup
+        title={<Message key="title" defaultMessage="Feedback form" />}
+        wrapperClassName={styles.successStateBoundings}
+        onClose={onClose}
+        data-testid="feedbackPopup"
+    >
+        <div className={styles.successBody}>
+            <span className={styles.successIcon} />
+            <div className={styles.successDescription}>
+                <Message
+                    key="youMessageReceived"
+                    defaultMessage="Your message was received. We will respond to you shortly. The answer will come to your E‑mail:"
+                />
+            </div>
+            <div className={styles.sentToEmail}>{email}</div>
+        </div>
+
+        <div className={styles.footer}>
+            <Button label={<Message key="close" defaultMessage="Close" />} block onClick={onClose} />
+        </div>
+    </Popup>
+);
+
+export default SuccessContactFormPopup;
--- a/packages/app/components/contact/contactForm.scss
+++ b/packages/app/components/contact/contactForm.scss
@ -4,12 +4,14 @@

 /* Form state */

-.contactForm {
-    composes: popupWrapper from '~app/components/ui/popup/popup.scss';
-
+.contactFormBoundings {
    @include popupBounding(500px);
 }

+.body {
+    padding: $popupPadding;
+}
+
 .philosophicalThought {
    font-family: $font-family-title;
    font-size: 19px;
@ -45,14 +47,12 @@

 /* Success State */

-.successState {
-    composes: popupWrapper from '~app/components/ui/popup/popup.scss';
-
+.successStateBoundings {
    @include popupBounding(320px);
 }

 .successBody {
-    composes: body from '~app/components/ui/popup/popup.scss';
+    composes: body;

    text-align: center;
 }
@ -61,6 +61,7 @@
    @extend .formDisclaimer;

    margin-bottom: 15px;
+    padding: 0 20px;
 }

 .successIcon {
@ -77,9 +78,3 @@
    color: #444;
    font-size: 18px;
 }
-
-/* Common */
-
-.footer {
-    margin-top: 0;
-}
--- a/packages/app/components/contact/index.ts
+++ b/packages/app/components/contact/index.ts
@ -1 +1,2 @@
+export { default } from './ContactForm';
 export { default as ContactLink } from './ContactLink';
--- a/packages/app/components/languageSwitcher/LanguageSwitcher.tsx
+++ b/packages/app/components/languageSwitcher/LanguageSwitcher.tsx
@ -1,181 +1,37 @@
-import React from 'react';
-import { FormattedMessage as Message, injectIntl, IntlShape } from 'react-intl';
-import clsx from 'clsx';
-import { connect } from 'react-redux';
-import { changeLang } from 'app/components/user/actions';
-import LANGS from 'app/i18n';
-import formStyles from 'app/components/ui/form/form.scss';
-import popupStyles from 'app/components/ui/popup/popup.scss';
-import icons from 'app/components/ui/icons.scss';
+import React, { ComponentType, useCallback } from 'react';
+import { useDispatch, useSelector } from 'react-redux';

-import styles from './languageSwitcher.scss';
-import LanguageList from './LanguageList';
+import LOCALES from 'app/i18n';
+import { changeLang } from 'app/components/user/actions';
 import { RootState } from 'app/reducers';

-const translateUrl = 'http://ely.by/translate';
+import LanguageSwitcherPopup from './LanguageSwitcherPopup';

-export interface LocaleData {
-    code: string;
-    name: string;
-    englishName: string;
-    progress: number;
-    isReleased: boolean;
-}
-
-export type LocalesMap = Record<string, LocaleData>;
-
-type OwnProps = {
-    onClose: () => void;
-    langs: LocalesMap;
-    emptyCaptions: Array<{
-        src: string;
-        caption: string;
-    }>;
+type Props = {
+    onClose?: () => void;
 };

-interface Props extends OwnProps {
-    intl: IntlShape;
-    selectedLocale: string;
-    changeLang: (lang: string) => void;
-}
+const LanguageSwitcher: ComponentType<Props> = ({ onClose = () => {} }) => {
+    const selectedLocale = useSelector((state: RootState) => state.i18n.locale);
+    const dispatch = useDispatch();

-class LanguageSwitcher extends React.Component<
-    Props,
-    {
-        filter: string;
-        filteredLangs: LocalesMap;
-    }
-> {
-    state = {
-        filter: '',
-        filteredLangs: this.props.langs,
-    };
-
-    static defaultProps = {
-        langs: LANGS,
-        onClose() {},
-    };
-
-    render() {
-        const { selectedLocale, onClose, intl } = this.props;
-        const { filteredLangs } = this.state;
-
-        return (
-            <div
-                className={styles.languageSwitcher}
-                data-testid="language-switcher"
-                data-e2e-active-locale={selectedLocale}
-            >
-                <div className={popupStyles.popup}>
-                    <div className={popupStyles.header}>
-                        <h2 className={popupStyles.headerTitle}>
-                            <Message key="siteLanguage" defaultMessage="Site language" />
-                        </h2>
-                        <span className={clsx(icons.close, popupStyles.close)} onClick={onClose} />
-                    </div>
-
-                    <div className={styles.languageSwitcherBody}>
-                        <div className={styles.searchBox}>
-                            <input
-                                className={clsx(formStyles.lightTextField, formStyles.greenTextField)}
-                                placeholder={intl.formatMessage({
-                                    key: 'startTyping',
-                                    defaultMessage: 'Start typing…',
-                                })}
-                                onChange={this.onFilterUpdate}
-                                onKeyPress={this.onFilterKeyPress()}
-                                autoFocus
-                            />
-                            <span className={styles.searchIcon} />
-                        </div>
-
-                        <LanguageList
-                            selectedLocale={selectedLocale}
-                            langs={filteredLangs}
-                            onChangeLang={this.onChangeLang}
-                        />
-
-                        <div className={styles.improveTranslates}>
-                            <div className={styles.improveTranslatesIcon} />
-                            <div className={styles.improveTranslatesContent}>
-                                <div className={styles.improveTranslatesTitle}>
-                                    <Message key="improveTranslates" defaultMessage="Improve Ely.by translation" />
-                                </div>
-                                <div className={styles.improveTranslatesText}>
-                                    <Message
-                                        key="improveTranslatesDescription"
-                                        defaultMessage="Ely.by’s localization is a community effort. If you want to improve the translation of Ely.by, we'd love your help."
-                                    />{' '}
-                                    <a href={translateUrl} target="_blank">
-                                        <Message
-                                            key="improveTranslatesParticipate"
-                                            defaultMessage="Click here to participate."
-                                        />
-                                    </a>
-                                </div>
-                            </div>
-                        </div>
-                    </div>
-                </div>
-            </div>
-        );
-    }
-
-    onChangeLang = this.changeLang.bind(this);
-
-    changeLang(lang: string) {
-        this.props.changeLang(lang);
-
-        setTimeout(this.props.onClose, 300);
-    }
-
-    onFilterUpdate = (event: React.ChangeEvent<HTMLInputElement>) => {
-        const filter = event.currentTarget.value.trim().toLowerCase();
-        const { langs } = this.props;
-
-        const result = Object.keys(langs).reduce((previous, key) => {
-            if (
-                langs[key].englishName.toLowerCase().indexOf(filter) === -1 &&
-                langs[key].name.toLowerCase().indexOf(filter) === -1
-            ) {
-                return previous;
-            }
-
-            previous[key] = langs[key];
-
-            return previous;
-        }, {} as typeof langs);
-
-        this.setState({
-            filter,
-            filteredLangs: result,
-        });
-    };
-
-    onFilterKeyPress() {
-        return (event: React.KeyboardEvent<HTMLInputElement>) => {
-            if (event.key !== 'Enter' || this.state.filter === '') {
-                return;
-            }
-
-            const locales = Object.keys(this.state.filteredLangs);
-
-            if (locales.length === 0) {
-                return;
-            }
-
-            this.changeLang(locales[0]);
-        };
-    }
-}
-
-export default injectIntl(
-    connect(
-        (state: RootState) => ({
-            selectedLocale: state.i18n.locale,
-        }),
-        {
-            changeLang,
+    const onChangeLang = useCallback(
+        (lang: string) => {
+            dispatch(changeLang(lang));
+            // TODO: await language change and close popup, but not earlier than after 300ms
+            setTimeout(onClose, 300);
        },
-    )(LanguageSwitcher),
-);
+        [dispatch, onClose],
+    );
+
+    return (
+        <LanguageSwitcherPopup
+            locales={LOCALES}
+            activeLocale={selectedLocale}
+            onSelect={onChangeLang}
+            onClose={onClose}
+        />
+    );
+};
+
+export default LanguageSwitcher;
--- a/packages/app/components/languageSwitcher/LanguageSwitcherPopup.story.tsx
+++ b/packages/app/components/languageSwitcher/LanguageSwitcherPopup.story.tsx
@ -0,0 +1,76 @@
+import React, { useState } from 'react';
+import { storiesOf } from '@storybook/react';
+import { action } from '@storybook/addon-actions';
+
+import LanguageSwitcherPopup from './LanguageSwitcherPopup';
+
+storiesOf('Components/Popups', module).add('LanguageSwitcherPopup', () => {
+    const [activeLocale, setActiveLocale] = useState('en');
+
+    return (
+        <LanguageSwitcherPopup
+            locales={{
+                // Released and completely translated language
+                be: {
+                    code: 'be',
+                    name: 'Беларуская',
+                    englishName: 'Belarusian',
+                    progress: 100,
+                    isReleased: true,
+                },
+                // Not released, but completely translated language
+                cs: {
+                    code: 'cs',
+                    name: 'Čeština',
+                    englishName: 'Czech',
+                    progress: 100,
+                    isReleased: false,
+                },
+                // English (:
+                en: {
+                    code: 'en',
+                    name: 'English',
+                    englishName: 'English',
+                    progress: 100,
+                    isReleased: true,
+                },
+                // Released, but not completely translated language
+                id: {
+                    code: 'id',
+                    name: 'Bahasa Indonesia',
+                    englishName: 'Indonesian',
+                    progress: 97,
+                    isReleased: true,
+                },
+                // A few more languages just to create a scroll and to test some interesting characters
+                pt: {
+                    code: 'pt',
+                    name: 'Português do Brasil',
+                    englishName: 'Portuguese, Brazilian',
+                    progress: 99,
+                    isReleased: true,
+                },
+                vi: {
+                    code: 'vi',
+                    name: 'Tiếng Việt',
+                    englishName: 'Vietnamese',
+                    progress: 99,
+                    isReleased: true,
+                },
+                zh: {
+                    code: 'zh',
+                    name: '简体中文',
+                    englishName: 'Simplified Chinese',
+                    progress: 99,
+                    isReleased: true,
+                },
+            }}
+            activeLocale={activeLocale}
+            onSelect={(locale) => {
+                action('onSelect')(locale);
+                setActiveLocale(locale);
+            }}
+            onClose={action('onClose')}
+        />
+    );
+});
--- a/packages/app/components/languageSwitcher/LanguageSwitcherPopup.tsx
+++ b/packages/app/components/languageSwitcher/LanguageSwitcherPopup.tsx
@ -0,0 +1,114 @@
+import React, { ChangeEventHandler, ComponentType, KeyboardEventHandler, useCallback, useState } from 'react';
+import { FormattedMessage as Message, useIntl } from 'react-intl';
+import clsx from 'clsx';
+
+import formStyles from 'app/components/ui/form/form.scss';
+import Popup from 'app/components/ui/popup';
+
+import styles from './languageSwitcher.scss';
+import LanguagesList from './LanguagesList';
+
+const translateUrl = 'http://ely.by/translate';
+
+export interface LocaleData {
+    code: string;
+    name: string;
+    englishName: string;
+    progress: number;
+    isReleased: boolean;
+}
+
+export type LocalesMap = Record<string, LocaleData>;
+
+interface Props {
+    locales: LocalesMap;
+    activeLocale: string;
+    onSelect?: (lang: string) => void;
+    onClose?: () => void;
+}
+
+const LanguageSwitcherPopup: ComponentType<Props> = ({ locales, activeLocale, onSelect, onClose }) => {
+    const intl = useIntl();
+
+    const [filter, setFilter] = useState<string>('');
+    const filteredLocales = Object.keys(locales).reduce((acc, key) => {
+        if (
+            locales[key].englishName.toLowerCase().includes(filter) ||
+            locales[key].name.toLowerCase().includes(filter)
+        ) {
+            acc[key] = locales[key];
+        }
+
+        return acc;
+    }, {} as typeof locales);
+
+    const onFilterChange = useCallback<ChangeEventHandler<HTMLInputElement>>(
+        (event) => {
+            setFilter(event.currentTarget.value.trim().toLowerCase());
+        },
+        [setFilter],
+    );
+    const onFilterKeyPress = useCallback<KeyboardEventHandler<HTMLInputElement>>(
+        (event) => {
+            if (event.key !== 'Enter' || filter === '') {
+                return;
+            }
+
+            const localesKeys = Object.keys(filteredLocales);
+
+            if (localesKeys.length === 0) {
+                return;
+            }
+
+            onSelect && onSelect(localesKeys[0]);
+        },
+        [filter, filteredLocales, onSelect],
+    );
+
+    return (
+        <Popup
+            title={<Message key="siteLanguage" defaultMessage="Site language" />}
+            wrapperClassName={styles.boundings}
+            bodyClassName={styles.body}
+            onClose={onClose}
+            data-testid="language-switcher"
+            data-e2e-active-locale={activeLocale}
+        >
+            <div className={styles.searchBox}>
+                <input
+                    className={clsx(formStyles.lightTextField, formStyles.greenTextField)}
+                    placeholder={intl.formatMessage({
+                        key: 'startTyping',
+                        defaultMessage: 'Start typing…',
+                    })}
+                    onChange={onFilterChange}
+                    onKeyPress={onFilterKeyPress}
+                    autoFocus
+                />
+                <span className={styles.searchIcon} />
+            </div>
+
+            <LanguagesList selectedLocale={activeLocale} locales={filteredLocales} onChangeLang={onSelect} />
+
+            <div className={styles.improveTranslates}>
+                <div className={styles.improveTranslatesIcon} />
+                <div className={styles.improveTranslatesContent}>
+                    <div className={styles.improveTranslatesTitle}>
+                        <Message key="improveTranslates" defaultMessage="Improve Ely.by translation" />
+                    </div>
+                    <div className={styles.improveTranslatesText}>
+                        <Message
+                            key="improveTranslatesDescription"
+                            defaultMessage="Ely.by’s localization is a community effort. If you want to improve the translation of Ely.by, we'd love your help."
+                        />{' '}
+                        <a href={translateUrl} target="_blank">
+                            <Message key="improveTranslatesParticipate" defaultMessage="Click here to participate." />
+                        </a>
+                    </div>
+                </div>
+            </div>
+        </Popup>
+    );
+};
+
+export default LanguageSwitcherPopup;
--- a/packages/app/components/languageSwitcher/LanguagesList.tsx
+++ b/packages/app/components/languageSwitcher/LanguagesList.tsx
@ -12,7 +12,7 @@ import { FormattedMessage as Message } from 'react-intl';
 import clsx from 'clsx';

 import LocaleItem from './LocaleItem';
-import { LocalesMap } from './LanguageSwitcher';
+import { LocalesMap } from './LanguageSwitcherPopup';
 import styles from './languageSwitcher.scss';

 import thatFuckingPumpkin from './images/that_fucking_pumpkin.svg';
@ -50,17 +50,21 @@ const emptyCaptions: ReadonlyArray<EmptyCaption> = [

 const itemHeight = 51;

-export default class LanguageList extends React.Component<{
+export default class LanguagesList extends React.Component<{
+    locales: LocalesMap;
    selectedLocale: string;
-    langs: LocalesMap;
-    onChangeLang: (lang: string) => void;
+    onChangeLang?: (lang: string) => void;
 }> {
    emptyListStateInner: HTMLDivElement | null;

+    static defaultProps = {
+        onChangeLang: (): void => {},
+    };
+
    render() {
-        const { selectedLocale, langs } = this.props;
-        const isListEmpty = Object.keys(langs).length === 0;
-        const firstLocale = Object.keys(langs)[0] || null;
+        const { selectedLocale, locales } = this.props;
+        const isListEmpty = Object.keys(locales).length === 0;
+        const firstLocale = Object.keys(locales)[0] || null;
        const emptyCaption = this.getEmptyCaption();

        return (
@ -71,7 +75,7 @@ export default class LanguageList extends React.Component<{
                willEnter={this.willEnter}
            >
                {(items) => (
-                    <div className={styles.languagesList} data-testid="language-list">
+                    <div className={styles.languagesList} data-testid="languages-list-item">
                        <div
                            className={clsx(styles.emptyLanguagesListWrapper, {
                                [styles.emptyLanguagesListVisible]: isListEmpty,
@ -126,17 +130,18 @@ export default class LanguageList extends React.Component<{
        return (event) => {
            event.preventDefault();

+            // @ts-ignore has defaultProps value
            this.props.onChangeLang(lang);
        };
    }

    getItemsWithDefaultStyles = (): Array<TransitionPlainStyle> => {
-        return Object.keys({ ...this.props.langs }).reduce(
+        return Object.keys({ ...this.props.locales }).reduce(
            (previous, key) => [
                ...previous,
                {
                    key,
-                    data: this.props.langs[key],
+                    data: this.props.locales[key],
                    style: {
                        height: itemHeight,
                        opacity: 1,
@ -148,12 +153,12 @@ export default class LanguageList extends React.Component<{
    };

    getItemsWithStyles = (): Array<TransitionStyle> => {
-        return Object.keys({ ...this.props.langs }).reduce(
+        return Object.keys({ ...this.props.locales }).reduce(
            (previous, key) => [
                ...previous,
                {
                    key,
-                    data: this.props.langs[key],
+                    data: this.props.locales[key],
                    style: {
                        height: spring(itemHeight, presets.gentle),
                        opacity: spring(1, presets.gentle),
--- a/packages/app/components/languageSwitcher/LocaleItem.tsx
+++ b/packages/app/components/languageSwitcher/LocaleItem.tsx
@ -3,7 +3,7 @@ import { localeFlags } from 'app/components/i18n';
 import { FormattedMessage as Message } from 'react-intl';

 import styles from './languageSwitcher.scss';
-import { LocaleData } from './LanguageSwitcher';
+import { LocaleData } from './LanguageSwitcherPopup';

 interface Props {
    locale: LocaleData;
--- a/packages/app/components/languageSwitcher/languageSwitcher.scss
+++ b/packages/app/components/languageSwitcher/languageSwitcher.scss
@ -8,17 +8,14 @@
    }
 }

-.languageSwitcher {
-    composes: popupWrapper from '~app/components/ui/popup/popup.scss';
-
+.boundings {
    @include popupBounding(400px);
 }

-.languageSwitcherBody {
-    composes: body from '~app/components/ui/popup/popup.scss';
-
+.body {
    display: flex;
    flex-direction: column;
+    padding: $popupPadding;
    max-height: calc(100vh - 132px);

    @media screen and (min-height: 630px) {
--- a/packages/app/components/profile/passwordRequestForm/PasswordRequestForm.story.tsx
+++ b/packages/app/components/profile/passwordRequestForm/PasswordRequestForm.story.tsx
@ -0,0 +1,17 @@
+import React from 'react';
+import { storiesOf } from '@storybook/react';
+import { action } from '@storybook/addon-actions';
+
+import { FormModel } from 'app/components/ui/form';
+
+import PasswordRequestForm from './PasswordRequestForm';
+
+storiesOf('Components/Popups/PasswordRequestForm', module)
+    .add('empty', () => <PasswordRequestForm form={new FormModel()} onSubmit={action('onSubmit')} />)
+    .add('with error', () => {
+        const form = new FormModel();
+        form.bindField('password');
+        form.errors['password'] = 'error.password_incorrect';
+
+        return <PasswordRequestForm form={form} onSubmit={action('onSubmit')} />;
+    });
--- a/packages/app/components/profile/passwordRequestForm/PasswordRequestForm.tsx
+++ b/packages/app/components/profile/passwordRequestForm/PasswordRequestForm.tsx
@ -1,52 +1,45 @@
 import React, { ComponentType } from 'react';
-import { defineMessages, FormattedMessage as Message } from 'react-intl';
-import clsx from 'clsx';
+import { FormattedMessage as Message } from 'react-intl';

+import Popup from 'app/components/ui/popup';
 import { Form, Button, Input, FormModel } from 'app/components/ui/form';
-import popupStyles from 'app/components/ui/popup/popup.scss';

 import styles from './passwordRequestForm.scss';

-const labels = defineMessages({
-    continue: 'Continue',
-});
-
 interface Props {
    form: FormModel;
-    onSubmit: (form: FormModel) => void;
+    onSubmit?: (form: FormModel) => void;
 }

 const PasswordRequestForm: ComponentType<Props> = ({ form, onSubmit }) => (
-    <div className={styles.requestPasswordForm} data-testid="password-request-form">
-        <div className={popupStyles.popup}>
-            <Form onSubmit={onSubmit} form={form}>
-                <div className={popupStyles.header}>
-                    <h2 className={popupStyles.headerTitle}>
-                        <Message key="title" defaultMessage="Confirm your action" />
-                    </h2>
+    <Popup
+        title={<Message key="title" defaultMessage="Confirm your action" />}
+        wrapperClassName={styles.boundings}
+        isClosable={false}
+        data-testid="password-request-form"
+    >
+        <Form onSubmit={onSubmit} form={form}>
+            <div className={styles.body}>
+                <span className={styles.lockIcon} />
+
+                <div className={styles.description}>
+                    <Message key="description" defaultMessage="To complete action enter the account password" />
                </div>

-                <div className={clsx(popupStyles.body, styles.body)}>
-                    <span className={styles.lockIcon} />
+                <Input
+                    {...form.bindField('password')}
+                    type="password"
+                    required
+                    autoFocus
+                    color="green"
+                    skin="light"
+                    center
+                />
+            </div>

-                    <div className={styles.description}>
-                        <Message key="description" defaultMessage="To complete action enter the account password" />
-                    </div>
-
-                    <Input
-                        {...form.bindField('password')}
-                        type="password"
-                        required
-                        autoFocus
-                        color="green"
-                        skin="light"
-                        center
-                    />
-                </div>
-                <Button color="green" label={labels.continue} block type="submit" />
-            </Form>
-        </div>
-    </div>
+            <Button type="submit" color="green" label={<Message key="continue" defaultMessage="Continue" />} block />
+        </Form>
+    </Popup>
 );

 export default PasswordRequestForm;
--- a/packages/app/components/profile/passwordRequestForm/index.ts
+++ b/packages/app/components/profile/passwordRequestForm/index.ts
@ -0,0 +1 @@
+export { default } from './PasswordRequestForm';
--- a/packages/app/components/profile/passwordRequestForm/passwordRequestForm.scss
+++ b/packages/app/components/profile/passwordRequestForm/passwordRequestForm.scss
@ -1,12 +1,11 @@
@import '~app/components/ui/popup/popup.scss';

-.requestPasswordForm {
-    composes: popupWrapper from '~app/components/ui/popup/popup.scss';
-
+.boundings {
    @include popupBounding(280px);
 }

 .body {
+    padding: $popupPadding;
    text-align: center;
 }

--- a/packages/app/components/ui/form/Form.tsx
+++ b/packages/app/components/ui/form/Form.tsx
@ -14,12 +14,12 @@ interface BaseProps {
 }

 interface PropsWithoutForm extends BaseProps {
-    onSubmit: (form: FormData) => Promise<void> | void;
+    onSubmit?: (form: FormData) => Promise<void> | void;
 }

 interface PropsWithForm extends BaseProps {
    form: FormModel;
-    onSubmit: (form: FormModel) => Promise<void> | void;
+    onSubmit?: (form: FormModel) => Promise<void> | void;
 }

 type Props = PropsWithoutForm | PropsWithForm;
@ -134,8 +134,10 @@ export default class Form extends React.Component<Props, State> {
            let result: Promise<void> | void;

            if (hasForm(this.props)) {
+                // @ts-ignore this prop has default value
                result = this.props.onSubmit(this.props.form);
            } else {
+                // @ts-ignore this prop has default value
                result = this.props.onSubmit(new FormData(form));
            }

--- a/packages/app/components/ui/popup/Popup.tsx
+++ b/packages/app/components/ui/popup/Popup.tsx
@ -0,0 +1,37 @@
+import React, { ComponentType, MouseEventHandler, ReactNode } from 'react';
+import clsx from 'clsx';
+
+import styles from './popup.scss';
+
+interface Props {
+    title: ReactNode;
+    wrapperClassName?: string;
+    popupClassName?: string;
+    bodyClassName?: string;
+    isClosable?: boolean;
+    onClose?: MouseEventHandler<HTMLSpanElement>;
+}
+
+const Popup: ComponentType<Props> = ({
+    title,
+    wrapperClassName,
+    popupClassName,
+    bodyClassName,
+    isClosable = true,
+    onClose,
+    children,
+    ...props // Passthrough the data-params for testing purposes
+}) => (
+    <div className={clsx(styles.popupWrapper, wrapperClassName)} {...props}>
+        <div className={clsx(styles.popup, popupClassName)}>
+            <div className={styles.header}>
+                <h2 className={styles.headerTitle}>{title}</h2>
+                {isClosable ? <span className={styles.close} onClick={onClose} data-testid="popup-close" /> : ''}
+            </div>
+
+            <div className={clsx(styles.body, bodyClassName)}>{children}</div>
+        </div>
+    </div>
+);
+
+export default Popup;
--- a/packages/app/components/ui/popup/PopupStack.test.tsx
+++ b/packages/app/components/ui/popup/PopupStack.test.tsx
@ -110,7 +110,7 @@ describe('<PopupStack />', () => {

        const event = new Event('keyup');
        // @ts-ignore
-        event.which = 27;
+        event.code = 'Escape';
        document.dispatchEvent(event);

        uxpect(props.destroy, 'was called once');
@ -135,7 +135,7 @@ describe('<PopupStack />', () => {

        const event = new Event('keyup');
        // @ts-ignore
-        event.which = 27;
+        event.code = 'Escape';
        document.dispatchEvent(event);

        uxpect(props.destroy, 'was called once');
@ -157,7 +157,7 @@ describe('<PopupStack />', () => {

        const event = new Event('keyup');
        // @ts-ignore
-        event.which = 27;
+        event.code = 'Escape';
        document.dispatchEvent(event);

        uxpect(props.destroy, 'was not called');
--- a/packages/app/components/ui/popup/PopupStack.tsx
+++ b/packages/app/components/ui/popup/PopupStack.tsx
@ -1,4 +1,4 @@
-import React from 'react';
+import React, { ReactNode } from 'react';
 import { TransitionGroup, CSSTransition } from 'react-transition-group';
 import { browserHistory } from 'app/services/history';
 import { connect } from 'react-redux';
@ -17,17 +17,17 @@ interface Props {
 export class PopupStack extends React.Component<Props> {
    unlistenTransition: () => void;

-    componentDidMount() {
+    componentDidMount(): void {
        document.addEventListener('keyup', this.onKeyPress);
        this.unlistenTransition = browserHistory.listen(this.onRouteLeave);
    }

-    componentWillUnmount() {
+    componentWillUnmount(): void {
        document.removeEventListener('keyup', this.onKeyPress);
        this.unlistenTransition();
    }

-    render() {
+    render(): ReactNode {
        const { popups } = this.props;

        return (
@ -57,11 +57,11 @@ export class PopupStack extends React.Component<Props> {
    }

    onClose(popup: PopupConfig) {
-        return () => this.props.destroy(popup);
+        return (): void => this.props.destroy(popup);
    }

    onOverlayClick(popup: PopupConfig) {
-        return (event: React.MouseEvent<HTMLDivElement>) => {
+        return (event: React.MouseEvent<HTMLDivElement>): void => {
            if (event.target !== event.currentTarget || popup.disableOverlayClose) {
                return;
            }
@ -72,7 +72,7 @@ export class PopupStack extends React.Component<Props> {
        };
    }

-    popStack() {
+    popStack(): void {
        const [popup] = this.props.popups.slice(-1);

        if (popup && !popup.disableOverlayClose) {
@ -80,14 +80,14 @@ export class PopupStack extends React.Component<Props> {
        }
    }

-    onKeyPress = (event: KeyboardEvent) => {
-        if (event.which === 27) {
+    onKeyPress = (event: KeyboardEvent): void => {
+        if (event.code === 'Escape') {
            // ESC key
            this.popStack();
        }
    };

-    onRouteLeave = (nextLocation: Location) => {
+    onRouteLeave = (nextLocation: Location): void => {
        if (nextLocation) {
            this.popStack();
        }
--- a/packages/app/components/ui/popup/index.ts
+++ b/packages/app/components/ui/popup/index.ts
@ -0,0 +1,2 @@
+export { default } from './Popup';
+export { default as PopupStack } from './PopupStack';
--- a/packages/app/components/ui/popup/popup.scss
+++ b/packages/app/components/ui/popup/popup.scss
@ -1,8 +1,8 @@
@import '~app/components/ui/colors.scss';
@import '~app/components/ui/fonts.scss';

-$popupPadding: 20px; // Отступ контента внутри попапа
-$popupMargin: 20px; // Отступ попапа от краёв окна
+$popupPadding: 20px; // Default content padding
+$popupMargin: 20px; // Outer popup margins

@mixin popupBounding($width, $padding: null) {
    @if ($padding == null) {
@ -88,10 +88,12 @@ $popupMargin: 20px; // Отступ попапа от краёв окна
 }

 .body {
-    padding: $popupPadding;
+
 }

 .close {
+    composes: close from '~app/components/ui/icons.scss';
+
    position: absolute;
    right: 0;
    top: 0;
@ -107,13 +109,20 @@ $popupMargin: 20px; // Отступ попапа от краёв окна
        color: rgba(#000, 0.6);
        background: rgba(#fff, 0.75);
    }
-}

-@media (min-width: 655px) {
-    .close {
+    @media (min-width: 655px) {
        position: fixed;
        padding: 35px;
    }
+
+    .trEnter &,
+    .trExit & {
+        // don't show the close during transition, because transform forces "position: fixed"
+        // to layout relative container, instead of body
+        opacity: 0;
+        transform: translate(100%);
+        transition: 0s;
+    }
 }

 /**
@ -161,14 +170,3 @@ $popupInitPosition: translateY(10%) rotateX(-8deg);
        }
    }
 }
-
-.trEnter,
-.trExit {
-    .close {
-        // do not show close during transition, because transform forces position: fixed
-        // to layout relative container, instead of body
-        opacity: 0;
-        transform: translate(100%);
-        transition: 0s;
-    }
-}
--- a/packages/app/package.json
+++ b/packages/app/package.json
@ -45,6 +45,7 @@
        "@types/react-motion": "^0.0.29",
        "@types/react-transition-group": "^4.2.4",
        "@types/webfontloader": "^1.6.30",
-        "@types/webpack-env": "^1.15.2"
+        "@types/webpack-env": "^1.15.2",
+        "utility-types": "^3.10.0"
    }
 }
--- a/packages/app/pages/profile/ProfilePage.tsx
+++ b/packages/app/pages/profile/ProfilePage.tsx
@ -3,7 +3,7 @@ import { Route, Switch, Redirect } from 'react-router-dom';
 import { connect } from 'react-redux';
 import { refreshUserData } from 'app/components/accounts/actions';
 import { create as createPopup } from 'app/components/ui/popup/actions';
-import PasswordRequestForm from 'app/components/profile/passwordRequestForm/PasswordRequestForm';
+import PasswordRequestForm from 'app/components/profile/passwordRequestForm';
 import logger from 'app/services/logger';
 import { browserHistory } from 'app/services/history';
 import { FooterMenu } from 'app/components/footerMenu';
@ -163,6 +163,7 @@ export default connect(

                                return <PasswordRequestForm form={form} onSubmit={onSubmit} />;
                            },
+                            // TODO: this property should be automatically extracted from the popup's isClosable prop
                            disableOverlayClose: true,
                        }),
                    );
--- a/packages/app/pages/root/RootPage.tsx
+++ b/packages/app/pages/root/RootPage.tsx
@ -10,7 +10,7 @@ import { ScrollIntoView } from 'app/components/ui/scroll';
 import PrivateRoute from 'app/containers/PrivateRoute';
 import AuthFlowRoute from 'app/containers/AuthFlowRoute';
 import Userbar from 'app/components/userbar/Userbar';
-import PopupStack from 'app/components/ui/popup/PopupStack';
+import { PopupStack } from 'app/components/ui/popup';
 import * as loader from 'app/services/loader';
 import { getActiveAccount } from 'app/components/accounts/reducer';
 import { User } from 'app/components/user';
--- a/packages/app/services/api/feedback.ts
+++ b/packages/app/services/api/feedback.ts
@ -1,12 +1,12 @@
 import request from 'app/services/request';

-export default {
-    send({ subject = '', email = '', message = '', category = '' }) {
-        return request.post('/api/feedback', {
-            subject,
-            email,
-            message,
-            category,
-        });
-    },
-};
+interface SendFeedbackParams {
+    subject: string;
+    email: string;
+    message: string;
+    category: string | number;
+}
+
+export function send(params: SendFeedbackParams) {
+    return request.post('/api/feedback', params);
+}
--- a/packages/app/shell/App.tsx
+++ b/packages/app/shell/App.tsx
@ -1,7 +1,7 @@
 import { hot } from 'react-hot-loader/root';
-import React from 'react';
+import React, { ComponentType } from 'react';
 import { Route, Switch } from 'react-router-dom';
-import { History } from 'history';
+
 import { Store } from 'app/reducers';
 import AuthFlowRoute from 'app/containers/AuthFlowRoute';
 import RootPage from 'app/pages/root/RootPage';
@ -9,11 +9,18 @@ import { ComponentLoader } from 'app/components/ui/loader';

 import ContextProvider from './ContextProvider';

+import type { History } from 'history';
+
 const SuccessOauthPage = React.lazy(() =>
    import(/* webpackChunkName: "page-oauth-success" */ 'app/pages/auth/SuccessOauthPage'),
 );

-const App = ({ store, history }: { store: Store; history: History<any> }) => (
+interface Props {
+    store: Store;
+    history: History;
+}
+
+const App: ComponentType<Props> = ({ store, history }) => (
    <ContextProvider store={store} history={history}>
        <React.Suspense fallback={<ComponentLoader />}>
            <Switch>
--- a/packages/app/shell/ContextProvider.tsx
+++ b/packages/app/shell/ContextProvider.tsx
@ -1,20 +1,26 @@
-import React from 'react';
+import React, { ComponentType } from 'react';
 import { Provider as ReduxProvider } from 'react-redux';
 import { Router } from 'react-router-dom';
 import { HelmetProvider } from 'react-helmet-async';
+import { History } from 'history';
+
 import { IntlProvider } from 'app/components/i18n';
 import { Store } from 'app/reducers';

-function ContextProvider({ children, store, history }: { children: React.ReactNode; store: Store; history: any }) {
-    return (
-        <HelmetProvider>
-            <ReduxProvider store={store}>
-                <IntlProvider>
-                    <Router history={history}>{children}</Router>
-                </IntlProvider>
-            </ReduxProvider>
-        </HelmetProvider>
-    );
+interface Props {
+    children: React.ReactNode;
+    store: Store;
+    history: History;
 }

+const ContextProvider: ComponentType<Props> = ({ children, store, history }) => (
+    <HelmetProvider>
+        <ReduxProvider store={store}>
+            <IntlProvider>
+                <Router history={history}>{children}</Router>
+            </IntlProvider>
+        </ReduxProvider>
+    </HelmetProvider>
+);
+
 export default ContextProvider;
--- a/packages/app/shell/TestContextProvider.tsx
+++ b/packages/app/shell/TestContextProvider.tsx
@ -1,16 +1,26 @@
-import React from 'react';
+import React, { ComponentType } from 'react';
 import { createMemoryHistory } from 'history';
+import { DeepPartial } from 'utility-types';
+
 import storeFactory from 'app/storeFactory';
+import { RootState } from 'app/reducers';

 import ContextProvider from './ContextProvider';

-type ContextProps = React.ComponentProps<typeof ContextProvider>;
+type NotOverriddenProps = Omit<React.ComponentProps<typeof ContextProvider>, 'store' | 'history'>;
+type Props = NotOverriddenProps & {
+    state?: DeepPartial<RootState>;
+};

-function TestContextProvider(props: Partial<ContextProps> & { children: ContextProps['children'] }) {
-    const store = React.useMemo(storeFactory, []);
+const TestContextProvider: ComponentType<Props> = ({ state = {}, children, ...props }) => {
+    const store = React.useMemo(() => storeFactory(state), []);
    const history = React.useMemo(createMemoryHistory, []);

-    return <ContextProvider store={store} history={history} {...props} />;
-}
+    return (
+        <ContextProvider store={store} history={history} {...props}>
+            {children}
+        </ContextProvider>
+    );
+};

 export default TestContextProvider;
--- a/packages/app/storeFactory.ts
+++ b/packages/app/storeFactory.ts
@ -1,4 +1,4 @@
-import { createStore, applyMiddleware, compose } from 'redux';
+import { createStore, applyMiddleware, compose, StoreEnhancer } from 'redux';
 // midleware, который позволяет возвращать из экшенов функции
 // это полезно для работы с асинхронными действиями,
 // а также дает возможность проверить какие-либо условия перед запуском экшена
@ -8,13 +8,13 @@ import persistState from 'redux-localstorage';

 import reducers, { Store } from 'app/reducers';

-export default function storeFactory(): Store {
+export default function storeFactory(preloadedState = {}): Store {
    const middlewares = applyMiddleware(thunk);
    const persistStateEnhancer = persistState(['accounts', 'user'], {
        key: 'redux-storage',
    });

-    let enhancer;
+    let enhancer: StoreEnhancer;

    if (process.env.NODE_ENV === 'production') {
        enhancer = compose(middlewares, persistStateEnhancer);
@ -23,7 +23,7 @@ export default function storeFactory(): Store {
        enhancer = composeEnhancers(middlewares, persistStateEnhancer);
    }

-    const store = createStore(reducers, {}, enhancer) as Store;
+    const store = createStore(reducers, preloadedState, enhancer) as Store;

    // Hot reload reducers
    if (module.hot && typeof module.hot.accept === 'function') {
--- a/tests-e2e/cypress/integration/profile/feedback-popup.test.ts
+++ b/tests-e2e/cypress/integration/profile/feedback-popup.test.ts
@ -35,7 +35,7 @@ describe('feedback popup', () => {
        cy.findByTestId('feedbackPopup').should('contain', 'Your message was received');
        cy.findByTestId('feedbackPopup').should('contain', account1.email);

-        cy.findByTestId('feedback-popup-close-button').click();
+        cy.findByTestId('feedbackPopup').find('button').contains('Close').click();

        cy.findByTestId('feedbackPopup').should('not.be.visible');
    });
--- a/tests-e2e/cypress/integration/profile/i18n.test.ts
+++ b/tests-e2e/cypress/integration/profile/i18n.test.ts
@ -1,5 +1,5 @@
 describe('Change locale', () => {
-    it('should change locale from footer', () => {
+    it('should change locale from the footer', () => {
        cy.visit('/');

        cy.findByTestId('footer').contains('Site language').click();
@ -7,7 +7,7 @@ describe('Change locale', () => {
        cy.findByTestId('language-switcher').should('be.visible');
        cy.findByTestId('language-switcher').should('have.attr', 'data-e2e-active-locale', 'en');

-        cy.findByTestId('language-list').contains('Belarusian').click();
+        cy.findByTestId('languages-list-item').contains('Belarusian').click();

        cy.findByTestId('language-switcher').should('not.be.visible');

@ -16,13 +16,13 @@ describe('Change locale', () => {
        cy.findByTestId('language-switcher').should('be.visible');
        cy.findByTestId('language-switcher').should('have.attr', 'data-e2e-active-locale', 'be');

-        cy.findByTestId('language-list').contains('English').click();
+        cy.findByTestId('languages-list-item').contains('English').click();

        cy.findByTestId('language-switcher').should('not.be.visible');
        cy.findByTestId('footer').should('contain', 'Site language');
    });

-    it('should change locale from profile', () => {
+    it('should change locale from the profile', () => {
        cy.login({ accounts: ['default'] }).then(({ accounts: [account] }) => {
            cy.server();
            cy.route({
@ -39,7 +39,7 @@ describe('Change locale', () => {
        cy.findByTestId('language-switcher').should('be.visible');
        cy.findByTestId('language-switcher').should('have.attr', 'data-e2e-active-locale', 'en');

-        cy.findByTestId('language-list').contains('Belarusian').click();
+        cy.findByTestId('languages-list-item').contains('Belarusian').click();

        cy.wait('@language').its('requestBody').should('eq', 'lang=be');

--- a/yarn.lock
+++ b/yarn.lock
@ -15896,6 +15896,11 @@ utila@^0.4.0, utila@~0.4:
  resolved "https://registry.yarnpkg.com/utila/-/utila-0.4.0.tgz#8a16a05d445657a3aea5eecc5b12a4fa5379772c"
  integrity sha1-ihagXURWV6Oupe7MWxKk+lN5dyw=

+utility-types@^3.10.0:
+  version "3.10.0"
+  resolved "https://registry.yarnpkg.com/utility-types/-/utility-types-3.10.0.tgz#ea4148f9a741015f05ed74fd615e1d20e6bed82b"
+  integrity sha512-O11mqxmi7wMKCo6HKFt5AhO4BwY3VV68YU07tgxfz8zJTIxr4BpsezN49Ffwy9j3ZpwwJp4fkRwjRzq3uWE6Rg==
+
 utils-merge@1.0.1:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"
				`@ -0,0 +1 @@`
				`export { default } from './PasswordRequestForm';`