mirror of https://github.com/webpack/webpack.git
51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
|
|
const ConcatSource = require("webpack-sources").ConcatSource;
|
|
|
|
class SetVarMainTemplatePlugin {
|
|
constructor(varExpression, copyObject) {
|
|
this.varExpression = varExpression;
|
|
this.copyObject = copyObject;
|
|
}
|
|
|
|
apply(compilation) {
|
|
const {
|
|
mainTemplate,
|
|
chunkTemplate
|
|
} = compilation;
|
|
|
|
const onRenderWithEntry = (source, chunk, hash) => {
|
|
const varExpression = mainTemplate.getAssetPath(this.varExpression, {
|
|
hash,
|
|
chunk
|
|
});
|
|
if(this.copyObject) {
|
|
return new ConcatSource(`(function(e, a) { for(var i in a) e[i] = a[i]; }(${varExpression}, `, source, "))");
|
|
} else {
|
|
const prefix = `${varExpression} =\n`;
|
|
return new ConcatSource(prefix, source);
|
|
}
|
|
};
|
|
|
|
for(const template of [mainTemplate, chunkTemplate]) {
|
|
template.hooks.renderWithEntry.tap("SetVarMainTemplatePlugin", onRenderWithEntry);
|
|
}
|
|
|
|
mainTemplate.hooks.globalHashPaths.tap("SetVarMainTemplatePlugin", paths => {
|
|
if(this.varExpression) paths.push(this.varExpression);
|
|
return paths;
|
|
});
|
|
mainTemplate.hooks.hash.tap("SetVarMainTemplatePlugin", hash => {
|
|
hash.update("set var");
|
|
hash.update(`${this.varExpression}`);
|
|
hash.update(`${this.copyObject}`);
|
|
});
|
|
}
|
|
}
|
|
|
|
module.exports = SetVarMainTemplatePlugin;
|