text: /*
  	MIT License http://www.opensource.org/licenses/mit-license.php
  	Author Tobias Koppers @sokra
  */
  "use strict";
  
  const ConstDependency = require("./dependencies/ConstDependency");
  const ParserHelpers = require("./ParserHelpers");
  const NullFactory = require("./NullFactory");
  
  const REPLACEMENTS = {
  	__webpack_hash__: "__webpack_require__.h" // eslint-disable-line camelcase
  };
  const REPLACEMENT_TYPES = {
  	__webpack_hash__: "string" // eslint-disable-line camelcase
  };
  
  class ExtendedAPIPlugin {
  	apply(compiler) {
  		compiler.plugin("compilation", (compilation, params) => {
  			compilation.dependencyFactories.set(ConstDependency, new NullFactory());
  			compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
  			compilation.mainTemplate.plugin("require-extensions", function(source, chunk, hash) {
  				const buf = [source];
  				buf.push("");
  				buf.push("// __webpack_hash__");
  				buf.push(`${this.requireFn}.h = ${JSON.stringify(hash)};`);
  				return this.asString(buf);
  			});
  			compilation.mainTemplate.plugin("global-hash", () => true);
  
  			params.normalModuleFactory.plugin("parser", (parser, parserOptions) => {
  				Object.keys(REPLACEMENTS).forEach(key => {
  					parser.plugin(`expression ${key}`, ParserHelpers.toConstantDependency(REPLACEMENTS[key]));
  					parser.plugin(`evaluate typeof ${key}`, ParserHelpers.evaluateToString(REPLACEMENT_TYPES[key]));
  				});
  			});
  		});
  	}
  }
  
  module.exports = ExtendedAPIPlugin;
  