tesseract.js - npm Package Compare versions

Comparing version 2.0.0 to 2.0.1

dist/tesseract.min.js

@@ -1,9 +0,2 @@
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 //# sourceMappingURL=tesseract.min.js.map

docs/api.md

@@ -182,3 +182,3 @@ # API
 - `options` a object of customized optons
-  - `rectangles` an array of objects to specify the region you want to recognized in the image, the object should contain top, left, width and height, see example below.
+  - `rectangle` an object to specify the region you want to recognized in the image, the object should contain top, left, width and height, see example below.
 - `jobId` Please see details above
@@ -202,3 +202,3 @@
 
-With rectangles
+With rectangle
 
@@ -213,5 +213,3 @@ ```javascript
   const { data: { text } } = await worker.recognize(image, {
-    rectangles: [
-      { top: 0, left: 0, width: 100, height: 100 },
-    ],
+    rectangle: { top: 0, left: 0, width: 100, height: 100 },
   });
@@ -218,0 +216,0 @@ console.log(text);

docs/examples.md

@@ -8,3 +8,3 @@ # Tesseract.js Examples
 ```javascript
-import { createWorker } from 'tesseract.js';
+const { createWorker } = require('tesseract.js');
 
@@ -26,3 +26,3 @@ const worker = createWorker();
 ```javascript
-import { createWorker } from 'tesseract.js';
+const { createWorker } = require('tesseract.js');
 
@@ -46,3 +46,3 @@ const worker = createWorker({
 ```javascript
-import { createWorker } from 'tesseract.js';
+const { createWorker } = require('tesseract.js');
 
@@ -63,3 +63,3 @@ const worker = createWorker();
 ```javascript
-import { createWorker } from 'tesseract.js';
+const { createWorker } = require('tesseract.js');
 
@@ -86,3 +86,3 @@ const worker = createWorker();
 ```javascript
-import { createWorker, PSM } from 'tesseract.js';
+const { createWorker, PSM } = require('tesseract.js');
 
@@ -111,10 +111,41 @@ const worker = createWorker();
 
-### with only part of the image (^2.0.0-beta.1)
+### with only part of the image (^2.0.1)
 
+**One rectangle**
+
 ```javascript
-import { createWorker } from 'tesseract.js';
+const { createWorker } = require('tesseract.js');
 
 const worker = createWorker();
+const rectangle = { left: 0, top: 0, width: 500, height: 250 };
+
+(async () => {
+  await worker.load();
+  await worker.loadLanguage('eng');
+  await worker.initialize('eng');
+  const { data: { text } } = await worker.recognize('https://tesseract.projectnaptha.com/img/eng_bw.png', { rectangle });
+  console.log(text);
+  await worker.terminate();
+})();
+```
+
+**Multiple Rectangles**
+
+```javascript
+const { createWorker } = require('tesseract.js');
+
+const worker = createWorker();
 const rectangles = [
-  { left: 0, top: 0, width: 500, height: 250 },
+  {
+    left: 0,
+    top: 0,
+    width: 500,
+    height: 250,
+  },
+  {
+    left: 500,
+    top: 0,
+    width: 500,
+    height: 250,
+  },
 ];
@@ -126,4 +157,8 @@
   await worker.initialize('eng');
-  const { data: { text } } = await worker.recognize('https://tesseract.projectnaptha.com/img/eng_bw.png', 'eng', { rectangles });
-  console.log(text);
+  const values = [];
+  for (let i = 0; i < rectangles.length; i++) {
+    const { data: { text } } = await worker.recognize('https://tesseract.projectnaptha.com/img/eng_bw.png', { rectangle: rectangles[i] });
+    values.push(text);
+  }
+  console.log(values);
   await worker.terminate();
@@ -133,6 +168,46 @@ })();
 
+**Multiple Rectangles (with scheduler to do recognition in parallel)**
+
+```javascript
+const { createWorker, createScheduler } = require('tesseract.js');
+
+const scheduler = createScheduler();
+const worker1 = createWorker();
+const worker2 = createWorker();
+const rectangles = [
+  {
+    left: 0,
+    top: 0,
+    width: 500,
+    height: 250,
+  },
+  {
+    left: 500,
+    top: 0,
+    width: 500,
+    height: 250,
+  },
+];
+
+(async () => {
+  await worker1.load();
+  await worker2.load();
+  await worker1.loadLanguage('eng');
+  await worker2.loadLanguage('eng');
+  await worker1.initialize('eng');
+  await worker2.initialize('eng');
+  scheduler.addWorker(worker1);
+  scheduler.addWorker(worker2);
+  const results = await Promise.all(rectangles.map((rectangle) => (
+    scheduler.addJob('recognize', 'https://tesseract.projectnaptha.com/img/eng_bw.png', { rectangle })
+  )));
+  console.log(results.map(r => r.data.text));
+  await scheduler.terminate();
+})();
+```
+
 ### with multiple workers to speed up (^2.0.0-beta.1)
 
 ```javascript
-import { createWorker, createScheduler } from 'tesseract.js';
+const { createWorker, createScheduler } = require('tesseract.js');
 
@@ -154,3 +229,3 @@ const scheduler = createScheduler();
   const results = await Promise.all(Array(10).fill(0).map(() => (
-    await scheduler.addJob('recognize', 'https://tesseract.projectnaptha.com/img/eng_bw.png')
+    scheduler.addJob('recognize', 'https://tesseract.projectnaptha.com/img/eng_bw.png')
   )))
@@ -157,0 +232,0 @@ console.log(results);

docs/local-installation.md

@@ -13,5 +13,5 @@ ## Local Installation
 Tesseract.recognize(image, langs, {
-  workerPath: 'https://unpkg.com/tesseract.js@v2.0.0-beta.1/dist/worker.min.js',
+  workerPath: 'https://unpkg.com/tesseract.js@v2.0.0/dist/worker.min.js',
   langPath: 'https://tessdata.projectnaptha.com/4.0.0',
-  corePath: 'https://unpkg.com/tesseract.js-core@v2.0.0-beta.13/tesseract-core.wasm.js',
+  corePath: 'https://unpkg.com/tesseract.js-core@v2.0.0/tesseract-core.wasm.js',
 })
@@ -24,5 +24,5 @@ ```
 const worker = createWorker({
-  workerPath: 'https://unpkg.com/tesseract.js@v2.0.0-beta.1/dist/worker.min.js',
+  workerPath: 'https://unpkg.com/tesseract.js@v2.0.0/dist/worker.min.js',
   langPath: 'https://tessdata.projectnaptha.com/4.0.0',
-  corePath: 'https://unpkg.com/tesseract.js-core@v2.0.0-beta.13/tesseract-core.wasm.js',
+  corePath: 'https://unpkg.com/tesseract.js-core@v2.0.0/tesseract-core.wasm.js',
 });
@@ -38,4 +38,4 @@ ```
 ### corePath
-A string specifying the location of the [tesseract.js-core library](https://github.com/naptha/tesseract.js-core), with default value 'https://unpkg.com/tesseract.js-core@v2.0.0-beta.13/tesseract-core.wasm.js' (fallback to tesseract-core.asm.js when WebAssembly is not available).
+A string specifying the location of the [tesseract.js-core library](https://github.com/naptha/tesseract.js-core), with default value 'https://unpkg.com/tesseract.js-core@v2.0.0/tesseract-core.wasm.js' (fallback to tesseract-core.asm.js when WebAssembly is not available).
 
-Another WASM option is 'https://unpkg.com/tesseract.js-core@v2.0.0-beta.13/tesseract-core.js' which is a script that loads 'https://unpkg.com/tesseract.js-core@v2.0.0-beta.13/tesseract-core.wasm'. But it fails to fetch at this moment.
+Another WASM option is 'https://unpkg.com/tesseract.js-core@v2.0.0/tesseract-core.js' which is a script that loads 'https://unpkg.com/tesseract.js-core@v2.0.0/tesseract-core.wasm'. But it fails to fetch at this moment.

package.json

 {
   "name": "tesseract.js",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "Pure Javascript Multilingual OCR",
@@ -12,2 +12,4 @@ "main": "src/index.js",
     "build": "rimraf dist && webpack --config scripts/webpack.config.prod.js",
+    "profile:tesseract": "webpack-bundle-analyzer dist/tesseract-stats.json",
+    "profile:worker": "webpack-bundle-analyzer dist/worker-stats.json",
     "prepublishOnly": "npm run build",
@@ -54,2 +56,3 @@ "wait": "rimraf dist && wait-on http://localhost:3000/dist/tesseract.dev.js",
     "webpack": "^4.41.4",
+    "webpack-bundle-analyzer": "^3.6.0",
     "webpack-cli": "^3.3.10",
@@ -59,7 +62,8 @@ "webpack-dev-middleware": "^3.7.2"
   "dependencies": {
-    "axios": "^0.18.0",
     "bmp-js": "^0.1.0",
     "file-type": "^12.4.1",
     "idb-keyval": "^3.2.0",
+    "is-electron": "^2.2.0",
     "is-url": "1.2.2",
+    "node-fetch": "^2.6.0",
     "opencollective-postinstall": "^2.0.2",
@@ -66,0 +70,0 @@ "regenerator-runtime": "^0.13.3",

README.md

 <p align="center">
-<a href="https://tesseract.projectnaptha.com/"><img alt="Tesseract.js" src="https://tesseract.projectnaptha.com/img/logo_small.png"></a>
+<a href="https://tesseract.projectnaptha.com/"><img width="256px" height="256px" alt="Tesseract.js" src="./docs/images/tesseract.png"></a>
 </p>
@@ -14,3 +14,3 @@
 <h3 align="center">
-  Version 2 beta is now available and under development in the master branch, read a story about v2 beta: <a href="https://medium.com/@jeromewus/why-i-refactor-tesseract-js-v2-50f750a9cfe2">Why I refactor tesseract.js v2?</a><br>
+  Version 2 is now available and under development in the master branch, read a story about v2: <a href="https://medium.com/@jeromewus/why-i-refactor-tesseract-js-v2-50f750a9cfe2">Why I refactor tesseract.js v2?</a><br>
   Check the <a href="https://github.com/naptha/tesseract.js/tree/support/1.x">support/1.x</a> branch for version 1
@@ -72,3 +72,3 @@ </h3>
 
-## Major changes in v2 beta
+## Major changes in v2
 - Upgrade to tesseract v4.1 (using emscripten 1.38.45)
@@ -88,3 +88,3 @@ - Support multiple languages at the same time, eg: eng+chi\_tra for English and Traditional Chinese
 <!-- v2 -->
-<script src='https://unpkg.com/tesseract.js@v2.0.0-beta.1/dist/tesseract.min.js'></script>
+<script src='https://unpkg.com/tesseract.js@v2.0.1/dist/tesseract.min.js'></script>
 
@@ -103,8 +103,8 @@ <!-- v1 -->
 # For v2
-npm install tesseract.js@next
-yarn add tesseract.js@next
+npm install tesseract.js
+yarn add tesseract.js
 
 # For v1
-npm install tesseract.js
-yarn add tesseract.js
+npm install tesseract.js@1
+yarn add tesseract.js@1
 ```
@@ -111,0 +111,0 @@

scripts/webpack.config.dev.js

 const path = require('path');
 const webpack = require('webpack');
+const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
 const common = require('./webpack.config.common');
@@ -22,2 +23,7 @@
     }),
+    new BundleAnalyzerPlugin({
+      analyzerMode: 'disable',
+      statsFilename: `${filename.split('.')[0]}-stats.json`,
+      generateStatsFile: true
+    }),
   ],
@@ -24,0 +30,0 @@ devServer: {

src/utils/getEnvironment.js

@@ -0,10 +1,21 @@
+const isElectron = require('is-electron');
+
 module.exports = (key) => {
-  const env = {
-    type: (typeof window !== 'undefined') && (typeof window.document !== 'undefined') ? 'browser' : 'node',
-  };
+  const env = {};
 
+  if (isElectron()) {
+    env.type = 'electron';
+  } else if (typeof window === 'object') {
+    env.type = 'browser';
+  } else if (typeof importScripts === 'function') {
+    env.type = 'webworker';
+  } else if (typeof process === 'object' && typeof require === 'function') {
+    env.type = 'node';
+  }
+
   if (typeof key === 'undefined') {
     return env;
   }
+
   return env[key];
 };

src/worker-script/browser/index.js

@@ -30,3 +30,4 @@ /**
   gunzip,
+  fetch: () => {},
   ...cache,
 });

src/worker-script/index.js

@@ -12,6 +12,5 @@ /**
 const fileType = require('file-type');
-const axios = require('axios');
 const isURL = require('is-url');
 const dump = require('./utils/dump');
-const isBrowser = require('../utils/getEnvironment')('type') === 'browser';
+const isWebWorker = require('../utils/getEnvironment')('type') === 'webworker';
 const setImage = require('./utils/setImage');
@@ -98,7 +97,4 @@ const defaultParams = require('./constants/defaultParams');
         if (path !== null) {
-          const { data: _data } = await axios.get(
-            `${path}/${lang}.traineddata${gzip ? '.gz' : ''}`,
-            { responseType: 'arraybuffer' },
-          );
-          data = _data;
+          const resp = await (isWebWorker ? fetch : adapter.fetch)(`${path}/${lang}.traineddata${gzip ? '.gz' : ''}`);
+          data = await resp.arrayBuffer();
         } else {
@@ -143,3 +139,3 @@ data = await adapter.readCache(`${langPath}/${lang}.traineddata${gzip ? '.gz' : ''}`);
   } catch (err) {
-    if (isBrowser && err instanceof DOMException) {
+    if (isWebWorker && err instanceof DOMException) {
       /*
@@ -197,10 +193,8 @@ * For some reason google chrome throw DOMException in loadLang,
 
-const recognize = ({ payload: { image, options: { rectangles = [] } } }, res) => {
+const recognize = ({ payload: { image, options: { rectangle: rec } } }, res) => {
   try {
     const ptr = setImage(TessModule, api, image);
-    rectangles.forEach(({
-      left, top, width, height,
-    }) => {
-      api.SetRectangle(left, top, width, height);
-    });
+    if (typeof rec === 'object') {
+      api.SetRectangle(rec.left, rec.top, rec.width, rec.height);
+    }
     api.Recognize(null);
@@ -207,0 +201,0 @@ res.resolve(dump(TessModule, api, params));

src/worker-script/node/index.js

@@ -11,2 +11,3 @@ /**
 
+const fetch = require('node-fetch');
 const worker = require('../');
@@ -27,3 +28,4 @@ const getCore = require('./getCore');
   gunzip,
+  fetch,
   ...cache,
 });

src/worker/browser/loadImage.js

@@ -1,2 +0,1 @@
-const axios = require('axios');
 const resolveURL = require('resolve-url');
@@ -44,4 +43,4 @@
     } else {
-      const { data: _data } = await axios.get(resolveURL(image), { responseType: 'arraybuffer' });
-      data = _data;
+      const resp = await fetch(resolveURL(image));
+      data = await resp.arrayBuffer();
     }
@@ -48,0 +47,0 @@ } else if (image instanceof HTMLElement) {

src/worker/node/loadImage.js

 const util = require('util');
 const fs = require('fs');
-const axios = require('axios');
+const fetch = require('node-fetch');
 const isURL = require('is-url');
@@ -23,4 +23,4 @@
     if (isURL(image) || image.startsWith('moz-extension://') || image.startsWith('chrome-extension://') || image.startsWith('file://')) {
-      const { data: _data } = await axios.get(image, { responseType: 'arraybuffer' });
-      data = _data;
+      const resp = await fetch(image);
+      data = await resp.arrayBuffer();
     } else if (/data:image\/([a-zA-Z]*);base64,([^"]*)/.test(image)) {
@@ -27,0 +27,0 @@ data = Buffer.from(image.split(',')[1], 'base64');

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Fixed alerts

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Number of package files

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increased by2.82%

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Total package byte prevSize

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decreased by-1.27%

Dependency count

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increased by10%

Dev dependency count

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increased by4.76%

Lines of code

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increased by600%

Dependency changes

• + Addedis-electron@^2.2.0

• + Addednode-fetch@^2.6.0

• + Addedis-electron@2.2.2(transitive)

• + Addednode-fetch@2.7.0(transitive)

• + Addedtr46@0.0.3(transitive)

• + Addedwebidl-conversions@3.0.1(transitive)

• + Addedwhatwg-url@5.0.0(transitive)

• - Removedaxios@^0.18.0

• - Removedaxios@0.18.1(transitive)

• - Removedfollow-redirects@1.5.10(transitive)

• - Removedis-buffer@2.0.5(transitive)