vue hello world项目
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const { ConcatSource, PrefixSource } = require("webpack-sources");
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("../declarations/WebpackOptions").Output} OutputOptions */
/** @typedef {import("./Chunk")} Chunk */
/** @typedef {import("./ChunkGraph")} ChunkGraph */
/** @typedef {import("./CodeGenerationResults")} CodeGenerationResults */
/** @typedef {import("./Compilation").AssetInfo} AssetInfo */
/** @typedef {import("./Compilation").PathData} PathData */
/** @typedef {import("./DependencyTemplates")} DependencyTemplates */
/** @typedef {import("./Module")} Module */
/** @typedef {import("./ModuleGraph")} ModuleGraph */
/** @typedef {import("./ModuleTemplate")} ModuleTemplate */
/** @typedef {import("./RuntimeModule")} RuntimeModule */
/** @typedef {import("./RuntimeTemplate")} RuntimeTemplate */
/** @typedef {import("./javascript/JavascriptModulesPlugin").ChunkRenderContext} ChunkRenderContext */
/** @typedef {import("./javascript/JavascriptModulesPlugin").RenderContext} RenderContext */
const START_LOWERCASE_ALPHABET_CODE = "a".charCodeAt(0);
const START_UPPERCASE_ALPHABET_CODE = "A".charCodeAt(0);
const DELTA_A_TO_Z = "z".charCodeAt(0) - START_LOWERCASE_ALPHABET_CODE + 1;
const NUMBER_OF_IDENTIFIER_START_CHARS = DELTA_A_TO_Z * 2 + 2; // a-z A-Z _ $
const NUMBER_OF_IDENTIFIER_CONTINUATION_CHARS =
NUMBER_OF_IDENTIFIER_START_CHARS + 10; // a-z A-Z _ $ 0-9
const FUNCTION_CONTENT_REGEX = /^function\s?\(\)\s?\{\r?\n?|\r?\n?\}$/g;
const INDENT_MULTILINE_REGEX = /^\t/gm;
const LINE_SEPARATOR_REGEX = /\r?\n/g;
const IDENTIFIER_NAME_REPLACE_REGEX = /^([^a-zA-Z$_])/;
const IDENTIFIER_ALPHA_NUMERIC_NAME_REPLACE_REGEX = /[^a-zA-Z0-9$]+/g;
const COMMENT_END_REGEX = /\*\//g;
const PATH_NAME_NORMALIZE_REPLACE_REGEX = /[^a-zA-Z0-9_!§$()=\-^°]+/g;
const MATCH_PADDED_HYPHENS_REPLACE_REGEX = /^-|-$/g;
/**
* @typedef {Object} RenderManifestOptions
* @property {Chunk} chunk the chunk used to render
* @property {string} hash
* @property {string} fullHash
* @property {OutputOptions} outputOptions
* @property {CodeGenerationResults} codeGenerationResults
* @property {{javascript: ModuleTemplate}} moduleTemplates
* @property {DependencyTemplates} dependencyTemplates
* @property {RuntimeTemplate} runtimeTemplate
* @property {ModuleGraph} moduleGraph
* @property {ChunkGraph} chunkGraph
*/
/** @typedef {RenderManifestEntryTemplated | RenderManifestEntryStatic} RenderManifestEntry */
/**
* @typedef {Object} RenderManifestEntryTemplated
* @property {function(): Source} render
* @property {string | function(PathData, AssetInfo=): string} filenameTemplate
* @property {PathData=} pathOptions
* @property {AssetInfo=} info
* @property {string} identifier
* @property {string=} hash
* @property {boolean=} auxiliary
*/
/**
* @typedef {Object} RenderManifestEntryStatic
* @property {function(): Source} render
* @property {string} filename
* @property {AssetInfo} info
* @property {string} identifier
* @property {string=} hash
* @property {boolean=} auxiliary
*/
/**
* @typedef {Object} HasId
* @property {number | string} id
*/
/**
* @typedef {function(Module, number): boolean} ModuleFilterPredicate
*/
class Template {
/**
*
* @param {Function} fn a runtime function (.runtime.js) "template"
* @returns {string} the updated and normalized function string
*/
static getFunctionContent(fn) {
return fn
.toString()
.replace(FUNCTION_CONTENT_REGEX, "")
.replace(INDENT_MULTILINE_REGEX, "")
.replace(LINE_SEPARATOR_REGEX, "\n");
}
/**
* @param {string} str the string converted to identifier
* @returns {string} created identifier
*/
static toIdentifier(str) {
if (typeof str !== "string") return "";
return str
.replace(IDENTIFIER_NAME_REPLACE_REGEX, "_$1")
.replace(IDENTIFIER_ALPHA_NUMERIC_NAME_REPLACE_REGEX, "_");
}
/**
*
* @param {string} str string to be converted to commented in bundle code
* @returns {string} returns a commented version of string
*/
static toComment(str) {
if (!str) return "";
return `/*! ${str.replace(COMMENT_END_REGEX, "* /")} */`;
}
/**
*
* @param {string} str string to be converted to "normal comment"
* @returns {string} returns a commented version of string
*/
static toNormalComment(str) {
if (!str) return "";
return `/* ${str.replace(COMMENT_END_REGEX, "* /")} */`;
}
/**
* @param {string} str string path to be normalized
* @returns {string} normalized bundle-safe path
*/
static toPath(str) {
if (typeof str !== "string") return "";
return str
.replace(PATH_NAME_NORMALIZE_REPLACE_REGEX, "-")
.replace(MATCH_PADDED_HYPHENS_REPLACE_REGEX, "");
}
// map number to a single character a-z, A-Z or multiple characters if number is too big
/**
* @param {number} n number to convert to ident
* @returns {string} returns single character ident
*/
static numberToIdentifier(n) {
if (n >= NUMBER_OF_IDENTIFIER_START_CHARS) {
// use multiple letters
return (
Template.numberToIdentifier(n % NUMBER_OF_IDENTIFIER_START_CHARS) +
Template.numberToIdentifierContinuation(
Math.floor(n / NUMBER_OF_IDENTIFIER_START_CHARS)
)
);
}
// lower case
if (n < DELTA_A_TO_Z) {
return String.fromCharCode(START_LOWERCASE_ALPHABET_CODE + n);
}
n -= DELTA_A_TO_Z;
// upper case
if (n < DELTA_A_TO_Z) {
return String.fromCharCode(START_UPPERCASE_ALPHABET_CODE + n);
}
if (n === DELTA_A_TO_Z) return "_";
return "$";
}
/**
* @param {number} n number to convert to ident
* @returns {string} returns single character ident
*/
static numberToIdentifierContinuation(n) {
if (n >= NUMBER_OF_IDENTIFIER_CONTINUATION_CHARS) {
// use multiple letters
return (
Template.numberToIdentifierContinuation(
n % NUMBER_OF_IDENTIFIER_CONTINUATION_CHARS
) +
Template.numberToIdentifierContinuation(
Math.floor(n / NUMBER_OF_IDENTIFIER_CONTINUATION_CHARS)
)
);
}
// lower case
if (n < DELTA_A_TO_Z) {
return String.fromCharCode(START_LOWERCASE_ALPHABET_CODE + n);
}
n -= DELTA_A_TO_Z;
// upper case
if (n < DELTA_A_TO_Z) {
return String.fromCharCode(START_UPPERCASE_ALPHABET_CODE + n);
}
n -= DELTA_A_TO_Z;
// numbers
if (n < 10) {
return `${n}`;
}
if (n === 10) return "_";
return "$";
}
/**
*
* @param {string | string[]} s string to convert to identity
* @returns {string} converted identity
*/
static indent(s) {
if (Array.isArray(s)) {
return s.map(Template.indent).join("\n");
} else {
const str = s.trimRight();
if (!str) return "";
const ind = str[0] === "\n" ? "" : "\t";
return ind + str.replace(/\n([^\n])/g, "\n\t$1");
}
}
/**
*
* @param {string|string[]} s string to create prefix for
* @param {string} prefix prefix to compose
* @returns {string} returns new prefix string
*/
static prefix(s, prefix) {
const str = Template.asString(s).trim();
if (!str) return "";
const ind = str[0] === "\n" ? "" : prefix;
return ind + str.replace(/\n([^\n])/g, "\n" + prefix + "$1");
}
/**
*
* @param {string|string[]} str string or string collection
* @returns {string} returns a single string from array
*/
static asString(str) {
if (Array.isArray(str)) {
return str.join("\n");
}
return str;
}
/**
* @typedef {Object} WithId
* @property {string|number} id
*/
/**
* @param {WithId[]} modules a collection of modules to get array bounds for
* @returns {[number, number] | false} returns the upper and lower array bounds
* or false if not every module has a number based id
*/
static getModulesArrayBounds(modules) {
let maxId = -Infinity;
let minId = Infinity;
for (const module of modules) {
const moduleId = module.id;
if (typeof moduleId !== "number") return false;
if (maxId < moduleId) maxId = moduleId;
if (minId > moduleId) minId = moduleId;
}
if (minId < 16 + ("" + minId).length) {
// add minId x ',' instead of 'Array(minId).concat(…)'
minId = 0;
}
// start with -1 because the first module needs no comma
let objectOverhead = -1;
for (const module of modules) {
// module id + colon + comma
objectOverhead += `${module.id}`.length + 2;
}
// number of commas, or when starting non-zero the length of Array(minId).concat()
const arrayOverhead = minId === 0 ? maxId : 16 + `${minId}`.length + maxId;
return arrayOverhead < objectOverhead ? [minId, maxId] : false;
}
/**
* @param {ChunkRenderContext} renderContext render context
* @param {Module[]} modules modules to render (should be ordered by identifier)
* @param {function(Module): Source} renderModule function to render a module
* @param {string=} prefix applying prefix strings
* @returns {Source} rendered chunk modules in a Source object
*/
static renderChunkModules(renderContext, modules, renderModule, prefix = "") {
const { chunkGraph } = renderContext;
var source = new ConcatSource();
if (modules.length === 0) {
return null;
}
/** @type {{id: string|number, source: Source|string}[]} */
const allModules = modules.map(module => {
return {
id: chunkGraph.getModuleId(module),
source: renderModule(module) || "false"
};
});
const bounds = Template.getModulesArrayBounds(allModules);
if (bounds) {
// Render a spare array
const minId = bounds[0];
const maxId = bounds[1];
if (minId !== 0) {
source.add(`Array(${minId}).concat(`);
}
source.add("[\n");
/** @type {Map<string|number, {id: string|number, source: Source|string}>} */
const modules = new Map();
for (const module of allModules) {
modules.set(module.id, module);
}
for (let idx = minId; idx <= maxId; idx++) {
const module = modules.get(idx);
if (idx !== minId) {
source.add(",\n");
}
source.add(`/* ${idx} */`);
if (module) {
source.add("\n");
source.add(module.source);
}
}
source.add("\n" + prefix + "]");
if (minId !== 0) {
source.add(")");
}
} else {
// Render an object
source.add("{\n");
for (let i = 0; i < allModules.length; i++) {
const module = allModules[i];
if (i !== 0) {
source.add(",\n");
}
source.add(`\n/***/ ${JSON.stringify(module.id)}:\n`);
source.add(module.source);
}
source.add(`\n\n${prefix}}`);
}
return source;
}
/**
* @param {RuntimeModule[]} runtimeModules array of runtime modules in order
* @param {RenderContext & { codeGenerationResults?: CodeGenerationResults }} renderContext render context
* @returns {Source} rendered runtime modules in a Source object
*/
static renderRuntimeModules(runtimeModules, renderContext) {
const source = new ConcatSource();
for (const module of runtimeModules) {
const codeGenerationResults = renderContext.codeGenerationResults;
let runtimeSource;
if (codeGenerationResults) {
runtimeSource = codeGenerationResults.getSource(
module,
renderContext.chunk.runtime,
"runtime"
);
} else {
const codeGenResult = module.codeGeneration({
chunkGraph: renderContext.chunkGraph,
dependencyTemplates: renderContext.dependencyTemplates,
moduleGraph: renderContext.moduleGraph,
runtimeTemplate: renderContext.runtimeTemplate,
runtime: renderContext.chunk.runtime,
codeGenerationResults
});
if (!codeGenResult) continue;
runtimeSource = codeGenResult.sources.get("runtime");
}
if (runtimeSource) {
source.add(Template.toNormalComment(module.identifier()) + "\n");
if (!module.shouldIsolate()) {
source.add(runtimeSource);
source.add("\n\n");
} else if (renderContext.runtimeTemplate.supportsArrowFunction()) {
source.add("(() => {\n");
source.add(new PrefixSource("\t", runtimeSource));
source.add("\n})();\n\n");
} else {
source.add("!function() {\n");
source.add(new PrefixSource("\t", runtimeSource));
source.add("\n}();\n\n");
}
}
}
return source;
}
/**
* @param {RuntimeModule[]} runtimeModules array of runtime modules in order
* @param {RenderContext} renderContext render context
* @returns {Source} rendered chunk runtime modules in a Source object
*/
static renderChunkRuntimeModules(runtimeModules, renderContext) {
return new PrefixSource(
"/******/ ",
new ConcatSource(
"function(__webpack_require__) { // webpackRuntimeModules\n",
this.renderRuntimeModules(runtimeModules, renderContext),
"}\n"
)
);
}
}
module.exports = Template;
module.exports.NUMBER_OF_IDENTIFIER_START_CHARS =
NUMBER_OF_IDENTIFIER_START_CHARS;
module.exports.NUMBER_OF_IDENTIFIER_CONTINUATION_CHARS =
NUMBER_OF_IDENTIFIER_CONTINUATION_CHARS;