Add strict mode directive (#1003)

Author: Fdawgs

.eslintrc

@@ -7,7 +7,12 @@
     "mocha": true,
     "worker": true
   },
+  "parserOptions": {
+    // airbnb-base sets this to "modules" for ESM but CJS is being used
+    "sourceType": "script"
+  },
   "rules": {
+    "strict": ["error", "global"],
     "no-underscore-dangle": 0,
     "no-console": 0,
     "global-require": 0,

benchmarks/node/memory-benchmark.js

@@ -1,5 +1,7 @@
 #!/usr/bin/env node
 
+'use strict';
+
 // Note: getting replicable results from this script requires:
 // (1) Running with the `--expose-gc` flag,
 // (2) adding `global.gc()` within the `index.js` file

benchmarks/node/speed-benchmark.js

@@ -1,4 +1,7 @@
 #!/usr/bin/env node
+
+'use strict';
+
 const path = require('path');
 const { createWorker } = require('../..');
 

examples/node/download-pdf.js

@@ -1,4 +1,7 @@
 #!/usr/bin/env node
+
+'use strict';
+
 const path = require('path');
 const fs = require('fs');
 const { createWorker } = require('../..');

examples/node/image-processing.js

@@ -1,4 +1,7 @@
 #!/usr/bin/env node
+
+'use strict';
+
 const path = require('path');
 const fs = require('fs');
 const { createWorker } = require('../..');

examples/node/recognize.js

@@ -1,4 +1,7 @@
 #!/usr/bin/env node
+
+'use strict';
+
 const path = require('path');
 const { createWorker } = require('../..');
 

examples/node/scheduler.js

@@ -1,3 +1,5 @@
+'use strict';
+
 const path = require('path');
 const { createWorker, createScheduler } = require('../..');
 

scripts/server.js

@@ -1,3 +1,5 @@
+'use strict';
+
 const webpack = require('webpack');
 const middleware = require('webpack-dev-middleware');
 const express = require('express');

scripts/test-helper.js

@@ -1,3 +1,5 @@
+'use strict';
+
 const constants = require('../tests/constants');
 global.expect = require('expect.js');
 global.fs = require('fs');

scripts/webpack.config.common.js

@@ -1,3 +1,5 @@
+'use strict';
+
 module.exports = {
   resolve: {
     fallback: {