NodeMainTemplatePlugin.js
6.93 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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const Template = require("../Template");
module.exports = class NodeMainTemplatePlugin {
constructor(asyncChunkLoading) {
this.asyncChunkLoading = asyncChunkLoading;
}
apply(mainTemplate) {
const asyncChunkLoading = this.asyncChunkLoading;
mainTemplate.plugin("local-vars", function(source, chunk) {
if(chunk.chunks.length > 0) {
return this.asString([
source,
"",
"// object to store loaded chunks",
"// \"0\" means \"already loaded\"",
"var installedChunks = {",
this.indent(chunk.ids.map((id) => `${id}: 0`).join(",\n")),
"};"
]);
}
return source;
});
mainTemplate.plugin("require-extensions", function(source, chunk) {
if(chunk.chunks.length > 0) {
return this.asString([
source,
"",
"// uncatched error handler for webpack runtime",
`${this.requireFn}.oe = function(err) {`,
this.indent([
"process.nextTick(function() {",
this.indent("throw err; // catch this error by using System.import().catch()"),
"});"
]),
"};"
]);
}
return source;
});
mainTemplate.plugin("require-ensure", function(_, chunk, hash) {
const chunkFilename = this.outputOptions.chunkFilename;
const chunkMaps = chunk.getChunkMaps();
const insertMoreModules = [
"var moreModules = chunk.modules, chunkIds = chunk.ids;",
"for(var moduleId in moreModules) {",
this.indent(this.renderAddModule(hash, chunk, "moduleId", "moreModules[moduleId]")),
"}"
];
if(asyncChunkLoading) {
return this.asString([
"// \"0\" is the signal for \"already loaded\"",
"if(installedChunks[chunkId] === 0)",
this.indent([
"return Promise.resolve();"
]),
"// array of [resolve, reject, promise] means \"currently loading\"",
"if(installedChunks[chunkId])",
this.indent([
"return installedChunks[chunkId][2];"
]),
"// load the chunk and return promise to it",
"var promise = new Promise(function(resolve, reject) {",
this.indent([
"installedChunks[chunkId] = [resolve, reject];",
"var filename = __dirname + " + this.applyPluginsWaterfall("asset-path", JSON.stringify(`/${chunkFilename}`), {
hash: `" + ${this.renderCurrentHashCode(hash)} + "`,
hashWithLength: (length) => `" + ${this.renderCurrentHashCode(hash, length)} + "`,
chunk: {
id: "\" + chunkId + \"",
hash: `" + ${JSON.stringify(chunkMaps.hash)}[chunkId] + "`,
hashWithLength: (length) => {
const shortChunkHashMap = {};
Object.keys(chunkMaps.hash).forEach((chunkId) => {
if(typeof chunkMaps.hash[chunkId] === "string")
shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length);
});
return `" + ${JSON.stringify(shortChunkHashMap)}[chunkId] + "`;
},
name: `" + (${JSON.stringify(chunkMaps.name)}[chunkId]||chunkId) + "`
}
}) + ";",
"require('fs').readFile(filename, 'utf-8', function(err, content) {",
this.indent([
"if(err) return reject(err);",
"var chunk = {};",
"require('vm').runInThisContext('(function(exports, require, __dirname, __filename) {' + content + '\\n})', filename)" +
"(chunk, require, require('path').dirname(filename), filename);"
].concat(insertMoreModules).concat([
"var callbacks = [];",
"for(var i = 0; i < chunkIds.length; i++) {",
this.indent([
"if(installedChunks[chunkIds[i]])",
this.indent([
"callbacks = callbacks.concat(installedChunks[chunkIds[i]][0]);"
]),
"installedChunks[chunkIds[i]] = 0;"
]),
"}",
"for(i = 0; i < callbacks.length; i++)",
this.indent("callbacks[i]();")
])),
"});"
]),
"});",
"return installedChunks[chunkId][2] = promise;"
]);
} else {
const request = this.applyPluginsWaterfall("asset-path", JSON.stringify(`./${chunkFilename}`), {
hash: `" + ${this.renderCurrentHashCode(hash)} + "`,
hashWithLength: (length) => `" + ${this.renderCurrentHashCode(hash, length)} + "`,
chunk: {
id: "\" + chunkId + \"",
hash: `" + ${JSON.stringify(chunkMaps.hash)}[chunkId] + "`,
hashWithLength: (length) => {
const shortChunkHashMap = {};
Object.keys(chunkMaps.hash).forEach((chunkId) => {
if(typeof chunkMaps.hash[chunkId] === "string")
shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length);
});
return `" + ${JSON.stringify(shortChunkHashMap)}[chunkId] + "`;
},
name: `" + (${JSON.stringify(chunkMaps.name)}[chunkId]||chunkId) + "`
}
});
return this.asString([
"// \"0\" is the signal for \"already loaded\"",
"if(installedChunks[chunkId] !== 0) {",
this.indent([
`var chunk = require(${request});`
].concat(insertMoreModules).concat([
"for(var i = 0; i < chunkIds.length; i++)",
this.indent("installedChunks[chunkIds[i]] = 0;")
])),
"}",
"return Promise.resolve();"
]);
}
});
mainTemplate.plugin("hot-bootstrap", function(source, chunk, hash) {
const hotUpdateChunkFilename = this.outputOptions.hotUpdateChunkFilename;
const hotUpdateMainFilename = this.outputOptions.hotUpdateMainFilename;
const chunkMaps = chunk.getChunkMaps();
const currentHotUpdateChunkFilename = this.applyPluginsWaterfall("asset-path", JSON.stringify(hotUpdateChunkFilename), {
hash: `" + ${this.renderCurrentHashCode(hash)} + "`,
hashWithLength: (length) => `" + ${this.renderCurrentHashCode(hash, length)} + "`,
chunk: {
id: "\" + chunkId + \"",
hash: `" + ${JSON.stringify(chunkMaps.hash)}[chunkId] + "`,
hashWithLength: (length) => {
const shortChunkHashMap = {};
Object.keys(chunkMaps.hash).forEach((chunkId) => {
if(typeof chunkMaps.hash[chunkId] === "string")
shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length);
});
return `" + ${JSON.stringify(shortChunkHashMap)}[chunkId] + "`;
},
name: `" + (${JSON.stringify(chunkMaps.name)}[chunkId]||chunkId) + "`
}
});
const currentHotUpdateMainFilename = this.applyPluginsWaterfall("asset-path", JSON.stringify(hotUpdateMainFilename), {
hash: `" + ${this.renderCurrentHashCode(hash)} + "`,
hashWithLength: (length) => `" + ${this.renderCurrentHashCode(hash, length)} + "`
});
return Template.getFunctionContent(asyncChunkLoading ? require("./NodeMainTemplateAsync.runtime.js") : require("./NodeMainTemplate.runtime.js"))
.replace(/\$require\$/g, this.requireFn)
.replace(/\$hotMainFilename\$/g, currentHotUpdateMainFilename)
.replace(/\$hotChunkFilename\$/g, currentHotUpdateChunkFilename);
});
mainTemplate.plugin("hash", function(hash) {
hash.update("node");
hash.update("3");
hash.update(this.outputOptions.filename + "");
hash.update(this.outputOptions.chunkFilename + "");
});
}
};