Optimize eslint

.eslintrc

@@ -1,5 +1,5 @@
 {
-  "extends": "airbnb",
+  "extends": "airbnb-base",
   "env": {
     "browser": true,
     "node": true,

package.json

@@ -23,6 +23,7 @@
     "test:browser:scheduler": "npm run test:browser-tpl -- -f ./tests/scheduler.test.html",
     "test:browser:FS": "npm run test:browser-tpl -- -f ./tests/FS.test.html",
     "lint": "eslint src",
+    "lint:fix": "eslint --fix src",
     "postinstall": "opencollective-postinstall || true"
   },
   "browser": {
@@ -39,11 +40,9 @@
     "acorn": "^6.4.0",
     "babel-loader": "^8.1.0",
     "cors": "^2.8.5",
-    "eslint": "^5.16.0",
-    "eslint-config-airbnb": "^17.1.1",
-    "eslint-plugin-import": "^2.19.1",
-    "eslint-plugin-jsx-a11y": "^6.2.3",
-    "eslint-plugin-react": "^7.17.0",
+    "eslint": "^7.2.0",
+    "eslint-config-airbnb-base": "^14.2.0",
+    "eslint-plugin-import": "^2.22.1",
     "expect.js": "^0.3.1",
     "express": "^4.17.1",
     "mocha": "^5.2.0",

src/createWorker.js

@@ -53,7 +53,7 @@ module.exports = (_options = {}) => {
     })
   );
 
-  const load = jobId => (
+  const load = (jobId) => (
     startJob(createJob({
       id: jobId, action: 'load', payload: { options },
     }))

src/worker-script/browser/cache.js

@@ -4,7 +4,7 @@ module.exports = {
   readCache: get,
   writeCache: set,
   deleteCache: del,
-  checkCache: path => (
-    get(path).then(v => typeof v !== 'undefined')
+  checkCache: (path) => (
+    get(path).then((v) => typeof v !== 'undefined')
   ),
 };

src/worker-script/browser/index.js

@@ -8,7 +8,7 @@
  * @author Jerome Wu <jeromewus@gmail.com>
  */
 
-const worker = require('../');
+const worker = require('..');
 const getCore = require('./getCore');
 const gunzip = require('./gunzip');
 const cache = require('./cache');
@@ -17,7 +17,7 @@ const cache = require('./cache');
  * register message handler
  */
 global.addEventListener('message', ({ data }) => {
-  worker.dispatchHandlers(data, obj => postMessage(obj));
+  worker.dispatchHandlers(data, (obj) => postMessage(obj));
 });
 
 /*

src/worker-script/index.js

@@ -154,7 +154,7 @@ const loadLanguage = async ({
 
 const setParameters = ({ payload: { params: _params } }, res) => {
   Object.keys(_params)
-    .filter(k => !k.startsWith('tessjs_'))
+    .filter((k) => !k.startsWith('tessjs_'))
     .forEach((key) => {
       api.SetVariable(key, _params[key]);
     });
@@ -171,7 +171,7 @@ const initialize = ({
 }, res) => {
   const langs = (typeof _langs === 'string')
     ? _langs
-    : _langs.map(l => ((typeof l === 'string') ? l : l.data)).join('+');
+    : _langs.map((l) => ((typeof l === 'string') ? l : l.data)).join('+');
 
   try {
     res.progress({

src/worker-script/node/cache.js

@@ -4,13 +4,13 @@ const fs = require('fs');
 module.exports = {
   readCache: util.promisify(fs.readFile),
   writeCache: util.promisify(fs.writeFile),
-  deleteCache: path => (
+  deleteCache: (path) => (
     util.promisify(fs.unlink)(path)
       .catch(() => {})
   ),
-  checkCache: path => (
+  checkCache: (path) => (
     util.promisify(fs.access)(path, fs.F_OK)
-      .then(err => (err === null))
+      .then((err) => (err === null))
       .catch(() => false)
   ),
 };

src/worker-script/node/index.js

@@ -9,7 +9,7 @@
  */
 
 const fetch = require('node-fetch');
-const worker = require('../');
+const worker = require('..');
 const getCore = require('./getCore');
 const gunzip = require('./gunzip');
 const cache = require('./cache');
@@ -18,7 +18,7 @@ const cache = require('./cache');
  * register message handler
  */
 process.on('message', (packet) => {
-  worker.dispatchHandlers(packet, obj => process.send(obj));
+  worker.dispatchHandlers(packet, (obj) => process.send(obj));
 });
 
 worker.setAdapter({

src/worker-script/utils/dump.js

@@ -61,8 +61,8 @@ module.exports = (TessModule, api, {
 
   const enumToString = (value, prefix) => (
     Object.keys(TessModule)
-      .filter(e => (e.startsWith(`${prefix}_`) && TessModule[e] === value))
-      .map(e => e.slice(prefix.length + 1))[0]
+      .filter((e) => (e.startsWith(`${prefix}_`) && TessModule[e] === value))
+      .map((e) => e.slice(prefix.length + 1))[0]
   );
 
   ri.Begin();

src/worker/browser/loadImage.js

@@ -8,7 +8,7 @@ const blueimpLoadImage = require('blueimp-load-image');
  * @function
  * @access private
  */
-const readFromBlobOrFile = blob => (
+const readFromBlobOrFile = (blob) => (
   new Promise((resolve, reject) => {
     const fileReader = new FileReader();
     fileReader.onload = () => {
@@ -21,11 +21,11 @@ const readFromBlobOrFile = blob => (
   })
 );
 
-const fixOrientationFromUrlOrBlobOrFile = blob => (
+const fixOrientationFromUrlOrBlobOrFile = (blob) => (
   new Promise((resolve) => {
     blueimpLoadImage(
       blob,
-      img => img.toBlob(resolve),
+      (img) => img.toBlob(resolve),
       {
         orientation: true,
         canvas: true,