Blame view

node_modules/webpack/lib/dependencies/RequireEnsurePlugin.js 1.51 KB
aaac7fed   liuqimichale   add
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
  /*
  	MIT License http://www.opensource.org/licenses/mit-license.php
  	Author Tobias Koppers @sokra
  */
  "use strict";
  
  const RequireEnsureItemDependency = require("./RequireEnsureItemDependency");
  const RequireEnsureDependency = require("./RequireEnsureDependency");
  
  const NullFactory = require("../NullFactory");
  
  const RequireEnsureDependenciesBlockParserPlugin = require("./RequireEnsureDependenciesBlockParserPlugin");
  
  const ParserHelpers = require("../ParserHelpers");
  
  class RequireEnsurePlugin {
  
  	apply(compiler) {
  		compiler.plugin("compilation", (compilation, params) => {
  			const normalModuleFactory = params.normalModuleFactory;
  
  			compilation.dependencyFactories.set(RequireEnsureItemDependency, normalModuleFactory);
  			compilation.dependencyTemplates.set(RequireEnsureItemDependency, new RequireEnsureItemDependency.Template());
  
  			compilation.dependencyFactories.set(RequireEnsureDependency, new NullFactory());
  			compilation.dependencyTemplates.set(RequireEnsureDependency, new RequireEnsureDependency.Template());
  
  			params.normalModuleFactory.plugin("parser", (parser, parserOptions) => {
  
  				if(typeof parserOptions.requireEnsure !== "undefined" && !parserOptions.requireEnsure)
  					return;
  
  				parser.apply(new RequireEnsureDependenciesBlockParserPlugin());
  				parser.plugin("evaluate typeof require.ensure", ParserHelpers.evaluateToString("function"));
  				parser.plugin("typeof require.ensure", ParserHelpers.toConstantDependency(JSON.stringify("function")));
  			});
  		});
  	}
  }
  module.exports = RequireEnsurePlugin;