| Path : /var/www/html/infraai.ai/frontend/node_modules/webpack/lib/css/ |
|
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| Current File : /var/www/html/infraai.ai/frontend/node_modules/webpack/lib/css/CssInjectStyleRuntimeModule.js |
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Natsu @xiaoxiaojx
*/
"use strict";
const { SyncWaterfallHook } = require("tapable");
const Compilation = require("../Compilation");
const RuntimeGlobals = require("../RuntimeGlobals");
const RuntimeModule = require("../RuntimeModule");
const Template = require("../Template");
/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../Module").ReadOnlyRuntimeRequirements} ReadOnlyRuntimeRequirements */
/**
* @typedef {object} CssInjectCompilationHooks
* @property {SyncWaterfallHook<[string, Chunk]>} createStyle
*/
/** @type {WeakMap<Compilation, CssInjectCompilationHooks>} */
const compilationHooksMap = new WeakMap();
class CssInjectStyleRuntimeModule extends RuntimeModule {
/**
* @param {Compilation} compilation the compilation
* @returns {CssInjectCompilationHooks} hooks
*/
static getCompilationHooks(compilation) {
if (!(compilation instanceof Compilation)) {
throw new TypeError(
"The 'compilation' argument must be an instance of Compilation"
);
}
let hooks = compilationHooksMap.get(compilation);
if (hooks === undefined) {
hooks = {
createStyle: new SyncWaterfallHook(["source", "chunk"])
};
compilationHooksMap.set(compilation, hooks);
}
return hooks;
}
/**
* @param {ReadOnlyRuntimeRequirements} runtimeRequirements runtime requirements
*/
constructor(runtimeRequirements) {
super("css inject style", RuntimeModule.STAGE_ATTACH);
/** @type {ReadOnlyRuntimeRequirements} */
this._runtimeRequirements = runtimeRequirements;
}
/**
* Generates runtime code for this runtime module.
* @returns {string | null} runtime code
*/
generate() {
const compilation = /** @type {Compilation} */ (this.compilation);
const { runtimeTemplate, outputOptions } = compilation;
const { uniqueName } = outputOptions;
const { _runtimeRequirements } = this;
/** @type {boolean} */
const withHmr =
_runtimeRequirements &&
_runtimeRequirements.has(RuntimeGlobals.hmrDownloadUpdateHandlers);
const { createStyle } =
CssInjectStyleRuntimeModule.getCompilationHooks(compilation);
// Only emit the nonce check when scriptNonce is part of the runtime
// requirements. Otherwise referencing `__webpack_require__.nc` would
// keep the require runtime alive for nothing.
const withScriptNonce =
_runtimeRequirements &&
_runtimeRequirements.has(RuntimeGlobals.scriptNonce);
const createStyleElementCode = Template.asString([
"var style = document.createElement('style');",
"",
...(withScriptNonce
? [
`if (${RuntimeGlobals.scriptNonce}) {`,
Template.indent(
`style.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});`
),
"}"
]
: []),
'style.setAttribute("data-webpack", getDataWebpackId(key));'
]);
return Template.asString([
`var dataWebpackPrefix = ${uniqueName ? JSON.stringify(`${uniqueName}:`) : '"webpack:"'};`,
"",
"function getDataWebpackId(identifier) {",
Template.indent("return dataWebpackPrefix + identifier;"),
"}",
"",
"function findStyleElement(identifier) {",
Template.indent([
"var elements = document.getElementsByTagName('style');",
"for (var i = 0; i < elements.length; i++) {",
Template.indent([
"var el = elements[i];",
"if (el.getAttribute('data-webpack') === getDataWebpackId(identifier)) {",
Template.indent("return el;"),
"}"
]),
"}",
"return null;"
]),
"}",
"",
"function insertStyleElement(key) {",
Template.indent([
createStyle.call(
createStyleElementCode,
/** @type {Chunk} */ (this.chunk)
),
"",
"document.head.appendChild(style);",
"",
"return style;"
]),
"}",
"",
`${RuntimeGlobals.cssInjectStyle} = ${runtimeTemplate.basicFunction(
"identifier, css",
[
"var element = findStyleElement(identifier) || insertStyleElement(identifier);",
"element.textContent = css;"
]
)};`,
"",
withHmr
? Template.asString([
"",
"function removeStyleElement(styleElement) {",
Template.indent([
"if (styleElement.parentNode) {",
Template.indent(
"styleElement.parentNode.removeChild(styleElement);"
),
"}"
]),
"}",
`${RuntimeGlobals.cssInjectStyle}.removeModules = ${runtimeTemplate.basicFunction(
"removedModules",
[
"if (!removedModules) return;",
"var identifiers = Array.isArray(removedModules) ? removedModules : [removedModules];",
"for (var i = 0; i < identifiers.length; i++) {",
Template.indent([
"var identifier = identifiers[i];",
"var element = findStyleElement(identifier);",
"if (element) {",
Template.indent("removeStyleElement(element);"),
"}"
]),
"}"
]
)};`,
`${RuntimeGlobals.hmrDownloadUpdateHandlers}.cssInjectStyle = ${runtimeTemplate.basicFunction(
"chunkIds, removedChunks, removedModules, promises, applyHandlers, updatedModulesList, css",
[
"if (removedModules) {",
Template.indent(
`${RuntimeGlobals.cssInjectStyle}.removeModules(removedModules);`
),
"}"
]
)};`
])
: "// no css inject style HMR download handler"
]);
}
}
module.exports = CssInjectStyleRuntimeModule;