Remove globals usage from hntrie.js (#3842)

.jshintrc

@@ -12,7 +12,8 @@
  "vAPI": false,
  "webext": false,
  "µBlock": false,
- "URLSearchParams": false
+ "URLSearchParams": false,
+ "WebAssembly": false
  },
  "laxbreak": true,
  "newcap": false,

src/js/hntrie.js

@@ -19,7 +19,7 @@
  Home: https://github.com/gorhill/uBlock
 */
 
-/* globals self */
+/* globals WebAssembly */
 
 'use strict';
 
@@ -450,28 +450,18 @@ const HNTrieContainer = class {
  }
 
  async enableWASM(wasmModuleFetcher, path) {
- // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/globalThis
- const globals = (( ) => {
- if ( typeof self !== 'undefined' ) { return self; }
- // jshint ignore:start
- if ( typeof globalThis !== 'undefined' ) { return globalThis; }
- if ( typeof global !== 'undefined' ) { return global; }
- // jshint ignore:end
- return {};
- })();
- const WASM = globals.WebAssembly || null;
- if ( WASM === null ) { return false; }
- if ( this.wasmMemory instanceof WASM.Memory ) { return true; }
+ if ( typeof WebAssembly === 'undefined' ) { return false; }
+ if ( this.wasmMemory instanceof WebAssembly.Memory ) { return true; }
  const module = await getWasmModule(wasmModuleFetcher, path);
- if ( module instanceof WASM.Module === false ) { return false; }
- const memory = new WASM.Memory({ initial: 2 });
- const instance = await WASM.instantiate(module, {
+ if ( module instanceof WebAssembly.Module === false ) { return false; }
+ const memory = new WebAssembly.Memory({ initial: 2 });
+ const instance = await WebAssembly.instantiate(module, {
  imports: {
  memory,
  growBuf: this.growBuf.bind(this, 24, 256)
  }
  });
- if ( instance instanceof WASM.Instance === false ) { return false; }
+ if ( instance instanceof WebAssembly.Instance === false ) { return false; }
  this.wasmMemory = memory;
  const curPageCount = memory.buffer.byteLength >>> 16;
  const newPageCount = roundToPageSize(this.buf.byteLength) >>> 16;