ProvidePlugin.js
1.86 KB
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
41
42
43
44
45
46
47
48
49
50
51
52
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
var ParserHelpers = require("./ParserHelpers");
var ConstDependency = require("./dependencies/ConstDependency");
var NullFactory = require("./NullFactory");
function ProvidePlugin(definitions) {
this.definitions = definitions;
}
module.exports = ProvidePlugin;
ProvidePlugin.prototype.apply = function(compiler) {
var definitions = this.definitions;
compiler.plugin("compilation", function(compilation, params) {
compilation.dependencyFactories.set(ConstDependency, new NullFactory());
compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
params.normalModuleFactory.plugin("parser", function(parser, parserOptions) {
Object.keys(definitions).forEach(function(name) {
var request = [].concat(definitions[name]);
var splittedName = name.split(".");
if(splittedName.length > 0) {
splittedName.slice(1).forEach(function(_, i) {
var name = splittedName.slice(0, i + 1).join(".");
parser.plugin("can-rename " + name, ParserHelpers.approve);
});
}
parser.plugin("expression " + name, function(expr) {
var nameIdentifier = name;
var scopedName = name.indexOf(".") >= 0;
var expression = "require(" + JSON.stringify(request[0]) + ")";
if(scopedName) {
nameIdentifier = "__webpack_provided_" + name.replace(/\./g, "_dot_");
}
if(request.length > 1) {
expression += request.slice(1).map(function(r) {
return "[" + JSON.stringify(r) + "]";
}).join("");
}
if(!ParserHelpers.addParsedVariableToModule(this, nameIdentifier, expression)) {
return false;
}
if(scopedName) {
ParserHelpers.toConstantDependency(nameIdentifier).bind(this)(expr);
}
return true;
});
});
});
});
};