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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const ParserHelpers = require("./ParserHelpers");
const ConstDependency = require("./dependencies/ConstDependency");
const NullFactory = require("./NullFactory");
class ProvidePlugin {
constructor(definitions) {
this.definitions = definitions;
}
apply(compiler) {
const definitions = this.definitions;
compiler.plugin("compilation", (compilation, params) => {
compilation.dependencyFactories.set(ConstDependency, new NullFactory());
compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
params.normalModuleFactory.plugin("parser", (parser, parserOptions) => {
Object.keys(definitions).forEach(name => {
var request = [].concat(definitions[name]);
var splittedName = name.split(".");
if(splittedName.length > 0) {
splittedName.slice(1).forEach((_, i) => {
const name = splittedName.slice(0, i + 1).join(".");
parser.plugin(`can-rename ${name}`, ParserHelpers.approve);
});
}
parser.plugin(`expression ${name}`, function(expr) {
let nameIdentifier = name;
const scopedName = name.indexOf(".") >= 0;
let expression = `require(${JSON.stringify(request[0])})`;
if(scopedName) {
nameIdentifier = `__webpack_provided_${name.replace(/\./g, "_dot_")}`;
}
if(request.length > 1) {
expression += request.slice(1).map(r => `[${JSON.stringify(r)}]`).join("");
}
if(!ParserHelpers.addParsedVariableToModule(this, nameIdentifier, expression)) {
return false;
}
if(scopedName) {
ParserHelpers.toConstantDependency(nameIdentifier).bind(this)(expr);
}
return true;
});
});
});
});
}
}
module.exports = ProvidePlugin;
|
