Add OCR tool to media editing modal (#11566)

app/javascript/mastodon/features/compose/components/upload_form.js

@@ -4,6 +4,7 @@ import UploadProgressContainer from '../containers/upload_progress_container';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import UploadContainer from '../containers/upload_container';
 import SensitiveButtonContainer from '../containers/sensitive_button_container';
+import { FormattedMessage } from 'react-intl';
 
 export default class UploadForm extends ImmutablePureComponent {
 
@@ -16,7 +17,7 @@ export default class UploadForm extends ImmutablePureComponent {
 
     return (
       <div className='compose-form__upload-wrapper'>
-        <UploadProgressContainer />
+        <UploadProgressContainer icon='upload' message={<FormattedMessage id='upload_progress.label' defaultMessage='Uploading…' />} />
 
         <div className='compose-form__uploads-wrapper'>
           {mediaIds.map(id => (

app/javascript/mastodon/features/compose/components/upload_progress.js

@@ -2,7 +2,6 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import Motion from '../../ui/util/optional_motion';
 import spring from 'react-motion/lib/spring';
-import { FormattedMessage } from 'react-intl';
 import Icon from 'mastodon/components/icon';
 
 export default class UploadProgress extends React.PureComponent {
@@ -10,10 +9,12 @@ export default class UploadProgress extends React.PureComponent {
   static propTypes = {
     active: PropTypes.bool,
     progress: PropTypes.number,
+    icon: PropTypes.string.isRequired,
+    message: PropTypes.node.isRequired,
   };
 
   render () {
-    const { active, progress } = this.props;
+    const { active, progress, icon, message } = this.props;
 
     if (!active) {
       return null;
@@ -22,11 +23,11 @@ export default class UploadProgress extends React.PureComponent {
     return (
       <div className='upload-progress'>
         <div className='upload-progress__icon'>
-          <Icon id='upload' />
+          <Icon id={icon} />
         </div>
 
         <div className='upload-progress__message'>
-          <FormattedMessage id='upload_progress.label' defaultMessage='Uploading...' />
+          {message}
 
           <div className='upload-progress__backdrop'>
             <Motion defaultStyle={{ width: 0 }} style={{ width: spring(progress) }}>

app/javascript/mastodon/features/ui/components/focal_point_modal.js

@@ -10,6 +10,11 @@ import { FormattedMessage, defineMessages, injectIntl } from 'react-intl';
 import IconButton from 'mastodon/components/icon_button';
 import Button from 'mastodon/components/button';
 import Video from 'mastodon/features/video';
+import { TesseractWorker } from 'tesseract.js';
+import Textarea from 'react-textarea-autosize';
+import UploadProgress from 'mastodon/features/compose/components/upload_progress';
+import CharacterCounter from 'mastodon/features/compose/components/character_counter';
+import { length } from 'stringz';
 
 const messages = defineMessages({
   close: { id: 'lightbox.close', defaultMessage: 'Close' },
@@ -29,6 +34,12 @@ const mapDispatchToProps = (dispatch, { id }) => ({
 
 });
 
+const removeExtraLineBreaks = str => str.replace(/\n\n/g, '******')
+  .replace(/\n/g, ' ')
+  .replace(/\*\*\*\*\*\*/g, '\n\n');
+
+const assetHost = process.env.CDN_HOST || '';
+
 export default @connect(mapStateToProps, mapDispatchToProps)
 @injectIntl
 class FocalPointModal extends ImmutablePureComponent {
@@ -47,6 +58,7 @@ class FocalPointModal extends ImmutablePureComponent {
     dragging: false,
     description: '',
     dirty: false,
+    progress: 0,
   };
 
   componentWillMount () {
@@ -133,9 +145,27 @@ class FocalPointModal extends ImmutablePureComponent {
     this.node = c;
   }
 
+  handleTextDetection = () => {
+    const { media } = this.props;
+
+    const worker = new TesseractWorker({
+      workerPath: `${assetHost}/packs/ocr/worker.min.js`,
+      corePath: `${assetHost}/packs/ocr/tesseract-core.wasm.js`,
+      langPath: `${assetHost}/ocr/lang-data`,
+    });
+
+    this.setState({ detecting: true });
+
+    worker.recognize(media.get('url'))
+      .progress(({ progress }) => this.setState({ progress }))
+      .finally(() => worker.terminate())
+      .then(({ text }) => this.setState({ description: removeExtraLineBreaks(text), dirty: true, detecting: false }))
+      .catch(() => this.setState({ detecting: false }));
+  }
+
   render () {
     const { media, intl, onClose } = this.props;
-    const { x, y, dragging, description, dirty } = this.state;
+    const { x, y, dragging, description, dirty, detecting, progress } = this.state;
 
     const width  = media.getIn(['meta', 'original', 'width']) || null;
     const height = media.getIn(['meta', 'original', 'height']) || null;
@@ -158,15 +188,27 @@ class FocalPointModal extends ImmutablePureComponent {
 
             <label className='setting-text-label' htmlFor='upload-modal__description'><FormattedMessage id='upload_form.description' defaultMessage='Describe for the visually impaired' /></label>
 
-            <textarea
-              id='upload-modal__description'
-              className='setting-text light'
-              value={description}
-              onChange={this.handleChange}
-              autoFocus
-            />
+            <div className='setting-text__wrapper'>
+              <Textarea
+                id='upload-modal__description'
+                className='setting-text light'
+                value={detecting ? '…' : description}
+                onChange={this.handleChange}
+                disabled={detecting}
+                autoFocus
+              />
+
+              <div className='setting-text__modifiers'>
+                <UploadProgress progress={progress * 100} active={detecting} icon='file-text-o' message={<FormattedMessage id='upload_modal.analyzing_picture' defaultMessage='Analyzing picture…' />} />
+              </div>
+            </div>
+
+            <div className='setting-text__toolbar'>
+              <button disabled={detecting || media.get('type') !== 'image'} className='link-button' onClick={this.handleTextDetection}><FormattedMessage id='upload_modal.detect_text' defaultMessage='Detect text from picture' /></button>
+              <CharacterCounter max={420} text={detecting ? '' : description} />
+            </div>
 
-            <Button disabled={!dirty} text={intl.formatMessage(messages.apply)} onClick={this.handleSubmit} />
+            <Button disabled={!dirty || detecting || length(description) > 420} text={intl.formatMessage(messages.apply)} onClick={this.handleSubmit} />
           </div>
 
           <div className='report-modal__statuses'>

app/javascript/styles/mastodon/components.scss

@@ -3,6 +3,27 @@
   -ms-overflow-style: -ms-autohiding-scrollbar;
 }
 
+.link-button {
+  display: block;
+  font-size: 15px;
+  line-height: 20px;
+  color: $ui-highlight-color;
+  border: 0;
+  background: transparent;
+  padding: 0;
+  cursor: pointer;
+
+  &:hover,
+  &:active {
+    text-decoration: underline;
+  }
+
+  &:disabled {
+    color: $ui-primary-color;
+    cursor: default;
+  }
+}
+
 .button {
   background-color: $ui-highlight-color;
   border: 10px none;
@@ -637,18 +658,6 @@
     .character-counter__wrapper {
       align-self: center;
       margin-right: 4px;
-
-      .character-counter {
-        cursor: default;
-        font-family: $font-sans-serif, sans-serif;
-        font-size: 14px;
-        font-weight: 600;
-        color: $lighter-text-color;
-
-        &.character-counter--over {
-          color: $warning-red;
-        }
-      }
     }
   }
 
@@ -665,6 +674,18 @@
   }
 }
 
+.character-counter {
+  cursor: default;
+  font-family: $font-sans-serif, sans-serif;
+  font-size: 14px;
+  font-weight: 600;
+  color: $lighter-text-color;
+
+  &.character-counter--over {
+    color: $warning-red;
+  }
+}
+
 .no-reduce-motion .spoiler-input {
   transition: height 0.4s ease, opacity 0.4s ease;
 }
@@ -4555,16 +4576,48 @@ a.status-card.compact:hover {
     padding: 10px;
     font-family: inherit;
     font-size: 14px;
-    resize: vertical;
+    resize: none;
     border: 0;
     outline: 0;
     border-radius: 4px;
     border: 1px solid $ui-secondary-color;
-    margin-bottom: 20px;
+    min-height: 100px;
+    max-height: 50vh;
+    margin-bottom: 10px;
 
     &:focus {
       border: 1px solid darken($ui-secondary-color, 8%);
     }
+
+    &__wrapper {
+      background: $white;
+      border: 1px solid $ui-secondary-color;
+      margin-bottom: 10px;
+      border-radius: 4px;
+
+      .setting-text {
+        border: 0;
+        margin-bottom: 0;
+        border-radius: 0;
+
+        &:focus {
+          border: 0;
+        }
+      }
+
+      &__modifiers {
+        color: $inverted-text-color;
+        font-family: inherit;
+        font-size: 14px;
+        background: $white;
+      }
+    }
+
+    &__toolbar {
+      display: flex;
+      justify-content: space-between;
+      margin-bottom: 20px;
+    }
   }
 
   .setting-text-label {

config/initializers/content_security_policy.rb

@@ -20,11 +20,11 @@ Rails.application.config.content_security_policy do |p|
   if Rails.env.development?
     webpacker_urls = %w(ws http).map { |protocol| "#{protocol}#{Webpacker.dev_server.https? ? 's' : ''}://#{Webpacker.dev_server.host_with_port}" }
 
-    p.connect_src :self, :blob, assets_host, Rails.configuration.x.streaming_api_base_url, *webpacker_urls
-    p.script_src  :self, :unsafe_inline, :unsafe_eval, assets_host
+    p.connect_src :self, :data, :blob, assets_host, Rails.configuration.x.streaming_api_base_url, *webpacker_urls
+    p.script_src  :self, :blob, :unsafe_inline, :unsafe_eval, assets_host
   else
-    p.connect_src :self, :blob, assets_host, Rails.configuration.x.streaming_api_base_url
-    p.script_src  :self, assets_host
+    p.connect_src :self, :data, :blob, assets_host, Rails.configuration.x.streaming_api_base_url
+    p.script_src  :self, :blob, assets_host
   end
 end
 

config/webpack/development.js

@@ -56,5 +56,6 @@ module.exports = merge(sharedConfig, {
       settings.dev_server.watch_options,
       watchOptions
     ),
+    writeToDisk: filePath => /ocr/.test(filePath),
   },
 });

config/webpack/shared.js

@@ -5,6 +5,7 @@ const { basename, dirname, join, relative, resolve } = require('path');
 const { sync } = require('glob');
 const MiniCssExtractPlugin = require('mini-css-extract-plugin');
 const AssetsManifestPlugin = require('webpack-assets-manifest');
+const CopyPlugin = require('copy-webpack-plugin');
 const extname = require('path-complete-extname');
 const { env, settings, themes, output } = require('./configuration');
 const rules = require('./rules');
@@ -84,6 +85,10 @@ module.exports = {
       writeToDisk: true,
       publicPath: true,
     }),
+    new CopyPlugin([
+      { from: 'node_modules/tesseract.js/dist/worker.min.js', to: 'ocr' },
+      { from: 'node_modules/tesseract.js-core/tesseract-core.wasm.js', to: 'ocr' },
+    ]),
   ],
 
   resolve: {

package.json

@@ -84,6 +84,7 @@
     "blurhash": "^1.0.0",
     "classnames": "^2.2.5",
     "compression-webpack-plugin": "^3.0.0",
+    "copy-webpack-plugin": "^5.0.4",
     "cross-env": "^5.1.4",
     "css-loader": "^3.2.0",
     "cssnano": "^4.1.10",
@@ -155,6 +156,7 @@
     "stringz": "^2.0.0",
     "substring-trie": "^1.0.2",
     "terser-webpack-plugin": "^1.4.1",
+    "tesseract.js": "^2.0.0-alpha.13",
     "throng": "^4.0.0",
     "tiny-queue": "^0.2.1",
     "uuid": "^3.1.0",

yarn.lock

@@ -1727,6 +1727,14 @@ aws4@^1.8.0:
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.8.0.tgz#f0e003d9ca9e7f59c7a508945d7b2ef9a04a542f"
   integrity sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==
 
+axios@^0.18.0:
+  version "0.18.1"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-0.18.1.tgz#ff3f0de2e7b5d180e757ad98000f1081b87bcea3"
+  integrity sha512-0BfJq4NSfQXd+SkFdrvFbG7addhYSBA2mQwISr46pD6E5iqkWg02RAs8vyTT/j0RTnoYmeXauBuSv1qKwR179g==
+  dependencies:
+    follow-redirects "1.5.10"
+    is-buffer "^2.0.2"
+
 axios@^0.19.0:
   version "0.19.0"
   resolved "https://registry.yarnpkg.com/axios/-/axios-0.19.0.tgz#8e09bff3d9122e133f7b8101c8fbdd00ed3d2ab8"
@@ -1975,6 +1983,11 @@ blurhash@^1.0.0:
   resolved "https://registry.yarnpkg.com/blurhash/-/blurhash-1.0.0.tgz#9087bc5cc4d482f1305059d7410df4133adcab2e"
   integrity sha512-x6fpZnd6AWde4U9m7xhUB44qIvGV4W6OdTAXGabYm4oZUOOGh5K1HAEoGAQn3iG4gbbPn9RSGce3VfNgGsX/Vw==
 
+bmp-js@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/bmp-js/-/bmp-js-0.1.0.tgz#e05a63f796a6c1ff25f4771ec7adadc148c07233"
+  integrity sha1-4Fpj95amwf8l9Hcex62twUjAcjM=
+
 bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
@@ -2212,6 +2225,26 @@ cacache@^11.2.0:
     unique-filename "^1.1.1"
     y18n "^4.0.0"
 
+cacache@^11.3.3:
+  version "11.3.3"
+  resolved "https://registry.yarnpkg.com/cacache/-/cacache-11.3.3.tgz#8bd29df8c6a718a6ebd2d010da4d7972ae3bbadc"
+  integrity sha512-p8WcneCytvzPxhDvYp31PD039vi77I12W+/KfR9S8AZbaiARFBCpsPJS+9uhWfeBfeAtW7o/4vt3MUqLkbY6nA==
+  dependencies:
+    bluebird "^3.5.5"
+    chownr "^1.1.1"
+    figgy-pudding "^3.5.1"
+    glob "^7.1.4"
+    graceful-fs "^4.1.15"
+    lru-cache "^5.1.1"
+    mississippi "^3.0.0"
+    mkdirp "^0.5.1"
+    move-concurrently "^1.0.1"
+    promise-inflight "^1.0.1"
+    rimraf "^2.6.3"
+    ssri "^6.0.1"
+    unique-filename "^1.1.1"
+    y18n "^4.0.0"
+
 cacache@^12.0.2:
   version "12.0.2"
   resolved "https://registry.yarnpkg.com/cacache/-/cacache-12.0.2.tgz#8db03205e36089a3df6954c66ce92541441ac46c"
@@ -2341,7 +2374,7 @@ chardet@^0.7.0:
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
   integrity sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==
 
-check-types@^7.3.0:
+check-types@^7.3.0, check-types@^7.4.0:
   version "7.4.0"
   resolved "https://registry.yarnpkg.com/check-types/-/check-types-7.4.0.tgz#0378ec1b9616ec71f774931a3c6516fad8c152f4"
   integrity sha512-YbulWHdfP99UfZ73NcUDlNJhEIDgm9Doq9GhpyXbF+7Aegi3CVV7qqMCKTTqJxlvEvnQBp9IA+dxsGN6xK/nSg==
@@ -2691,6 +2724,24 @@ copy-descriptor@^0.1.0:
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
   integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
 
+copy-webpack-plugin@^5.0.4:
+  version "5.0.4"
+  resolved "https://registry.yarnpkg.com/copy-webpack-plugin/-/copy-webpack-plugin-5.0.4.tgz#c78126f604e24f194c6ec2f43a64e232b5d43655"
+  integrity sha512-YBuYGpSzoCHSSDGyHy6VJ7SHojKp6WHT4D7ItcQFNAYx2hrwkMe56e97xfVR0/ovDuMTrMffXUiltvQljtAGeg==
+  dependencies:
+    cacache "^11.3.3"
+    find-cache-dir "^2.1.0"
+    glob-parent "^3.1.0"
+    globby "^7.1.1"
+    is-glob "^4.0.1"
+    loader-utils "^1.2.3"
+    minimatch "^3.0.4"
+    normalize-path "^3.0.0"
+    p-limit "^2.2.0"
+    schema-utils "^1.0.0"
+    serialize-javascript "^1.7.0"
+    webpack-log "^2.0.0"
+
 core-js-compat@^3.1.1:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/core-js-compat/-/core-js-compat-3.1.3.tgz#0cc3ba4c7f62928c2837e1cffbe8dc78b4f1ae14"
@@ -3274,6 +3325,13 @@ diffie-hellman@^5.0.0:
     miller-rabin "^4.0.0"
     randombytes "^2.0.0"
 
+dir-glob@^2.0.0:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/dir-glob/-/dir-glob-2.2.2.tgz#fa09f0694153c8918b18ba0deafae94769fc50c4"
+  integrity sha512-f9LBi5QWzIW3I6e//uxZoLBlUt9kcp66qo0sSCxL6YZKc75R1c4MFCoe/LaZiBGmgujvQdxc5Bn3QhfyvK5Hsw==
+  dependencies:
+    path-type "^3.0.0"
+
 discontinuous-range@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/discontinuous-range/-/discontinuous-range-1.0.0.tgz#e38331f0844bba49b9a9cb71c771585aab1bc65a"
@@ -4222,6 +4280,11 @@ file-loader@^4.1.0:
     loader-utils "^1.2.3"
     schema-utils "^2.0.0"
 
+file-type@^10.5.0:
+  version "10.11.0"
+  resolved "https://registry.yarnpkg.com/file-type/-/file-type-10.11.0.tgz#2961d09e4675b9fb9a3ee6b69e9cd23f43fd1890"
+  integrity sha512-uzk64HRpUZyTGZtVuvrjP0FYxzQrBf4rojot6J65YMEbwBLB0CWm0CLojVpwpmFmxcE/lkvYICgfcGozbBq6rw==
+
 filesize@^3.6.1:
   version "3.6.1"
   resolved "https://registry.yarnpkg.com/filesize/-/filesize-3.6.1.tgz#090bb3ee01b6f801a8a8be99d31710b3422bb317"
@@ -4644,6 +4707,18 @@ globby@^6.1.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
+globby@^7.1.1:
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/globby/-/globby-7.1.1.tgz#fb2ccff9401f8600945dfada97440cca972b8680"
+  integrity sha1-+yzP+UAfhgCUXfral0QMypcrhoA=
+  dependencies:
+    array-union "^1.0.1"
+    dir-glob "^2.0.0"
+    glob "^7.1.2"
+    ignore "^3.3.5"
+    pify "^3.0.0"
+    slash "^1.0.0"
+
 globule@^1.0.0:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/globule/-/globule-1.2.1.tgz#5dffb1b191f22d20797a9369b49eab4e9839696d"
@@ -4981,6 +5056,11 @@ icss-utils@^4.0.0, icss-utils@^4.1.1:
   dependencies:
     postcss "^7.0.14"
 
+idb-keyval@^3.1.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/idb-keyval/-/idb-keyval-3.2.0.tgz#cbbf354deb5684b6cdc84376294fc05932845bd6"
+  integrity sha512-slx8Q6oywCCSfKgPgL0sEsXtPVnSbTLWpyiDcu6msHOyKOLari1TD1qocXVCft80umnkk3/Qqh3lwoFt8T/BPQ==
+
 ieee754@^1.1.4:
   version "1.1.12"
   resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.12.tgz#50bf24e5b9c8bb98af4964c941cdb0918da7b60b"
@@ -4998,7 +5078,7 @@ ignore-walk@^3.0.1:
   dependencies:
     minimatch "^3.0.4"
 
-ignore@^3.1.2:
+ignore@^3.1.2, ignore@^3.3.5:
   version "3.3.10"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.10.tgz#0a97fb876986e8081c631160f8f9f389157f0043"
   integrity sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==
@@ -5540,6 +5620,16 @@ is-typedarray@~1.0.0:
   resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
   integrity sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=
 
+is-url@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/is-url/-/is-url-1.2.2.tgz#498905a593bf47cc2d9e7f738372bbf7696c7f26"
+  integrity sha1-SYkFpZO/R8wtnn9zg3K792lsfyY=
+
+is-url@^1.2.4:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/is-url/-/is-url-1.2.4.tgz#04a4df46d28c4cff3d73d01ff06abeb318a1aa52"
+  integrity sha512-ITvGim8FhRiYe4IQ5uHSkj7pVaPDrCTkNd3yq3cV7iZAcJdHTUMPMEHcqSOy9xZ9qFenQCvi+2wjH9a1nXqHww==
+
 is-windows@^1.0.0, is-windows@^1.0.1, is-windows@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
@@ -6818,6 +6908,11 @@ node-fetch@^1.0.1:
     encoding "^0.1.11"
     is-stream "^1.0.1"
 
+node-fetch@^2.3.0:
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.0.tgz#e633456386d4aa55863f676a7ab0daa8fdecb0fd"
+  integrity sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA==
+
 node-forge@0.7.5:
   version "0.7.5"
   resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.7.5.tgz#6c152c345ce11c52f465c2abd957e8639cd674df"
@@ -7157,6 +7252,11 @@ onetime@^2.0.0:
   dependencies:
     mimic-fn "^1.0.0"
 
+opencollective-postinstall@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/opencollective-postinstall/-/opencollective-postinstall-2.0.2.tgz#5657f1bede69b6e33a45939b061eb53d3c6c3a89"
+  integrity sha512-pVOEP16TrAO2/fjej1IdOyupJY8KDUM1CvsaScRbw6oddvpQoOfGk4ywha0HKKVAD6RkW4x6Q+tNBwhf3Bgpuw==
+
 opener@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/opener/-/opener-1.5.1.tgz#6d2f0e77f1a0af0032aca716c2c1fbb8e7e8abed"
@@ -9864,6 +9964,37 @@ terser@^4.1.2:
     source-map "~0.6.1"
     source-map-support "~0.5.12"
 
+tesseract.js-core@^2.0.0-beta.10:
+  version "2.0.0-beta.10"
+  resolved "https://registry.yarnpkg.com/tesseract.js-core/-/tesseract.js-core-2.0.0-beta.10.tgz#b8f0dd2be4686650c4350f648900adccfaf58d6b"
+  integrity sha512-QmNgMA9m5ES5uMTqpOAPysrUA80vUx/6WKQlfkK3zhOeAgqv8DjwwcDv9tQv2TgRzOQ+LFKrJn94Y2rw5b2IGw==
+
+tesseract.js-utils@^1.0.0-beta.8:
+  version "1.0.0-beta.8"
+  resolved "https://registry.yarnpkg.com/tesseract.js-utils/-/tesseract.js-utils-1.0.0-beta.8.tgz#d1ef25c12609a337c3e0ac12a33f9903f3145a68"
+  integrity sha512-qjHBfWfzo2o1ZY9XI0Wh2hmpp38+mIgCMOk60W5Yyie/pBl421VLBKOZUEwQgpbLnOJ24VU6Q8yXsVgtFFHcFg==
+  dependencies:
+    axios "^0.18.0"
+    bmp-js "^0.1.0"
+    file-type "^10.5.0"
+    idb-keyval "^3.1.0"
+    is-url "^1.2.4"
+    zlibjs "^0.3.1"
+
+tesseract.js@^2.0.0-alpha.13:
+  version "2.0.0-alpha.13"
+  resolved "https://registry.yarnpkg.com/tesseract.js/-/tesseract.js-2.0.0-alpha.13.tgz#87bb3d71fe646c0993b073552241d203d9dfef3a"
+  integrity sha512-ZFEdak7jWtN5vIDwZcw8OdAqA7RvG0QRailZKQFS5rtnl/Yy5vC4WcqfJh9+o+cA3bdr2zV5SENoWDtEihlSVA==
+  dependencies:
+    axios "^0.18.0"
+    check-types "^7.4.0"
+    is-url "1.2.2"
+    node-fetch "^2.3.0"
+    opencollective-postinstall "^2.0.2"
+    resolve-url "^0.2.1"
+    tesseract.js-core "^2.0.0-beta.10"
+    tesseract.js-utils "^1.0.0-beta.8"
+
 test-exclude@^5.0.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-5.1.0.tgz#6ba6b25179d2d38724824661323b73e03c0c1de1"
@@ -10726,3 +10857,8 @@ yargs@^13.3.0:
     which-module "^2.0.0"
     y18n "^4.0.0"
     yargs-parser "^13.1.1"
+
+zlibjs@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/zlibjs/-/zlibjs-0.3.1.tgz#50197edb28a1c42ca659cc8b4e6a9ddd6d444554"
+  integrity sha1-UBl+2yihxCymWcyLTmqd3W1ERVQ=