source: imaps-frontend/node_modules/webpack/lib/dependencies/CssLocalIdentifierDependency.js@ 79a0317

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Ivan Kopeykin @vankop
*/

"use strict";

const { cssExportConvention } = require("../util/conventions");
const createHash = require("../util/createHash");
const { makePathsRelative } = require("../util/identifier");
const makeSerializable = require("../util/makeSerializable");
const memoize = require("../util/memoize");
const NullDependency = require("./NullDependency");

/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../../declarations/WebpackOptions").CssGeneratorExportsConvention} CssGeneratorExportsConvention */
/** @typedef {import("../../declarations/WebpackOptions").CssGeneratorLocalIdentName} CssGeneratorLocalIdentName */
/** @typedef {import("../ChunkGraph")} ChunkGraph */
/** @typedef {import("../CssModule")} CssModule */
/** @typedef {import("../Dependency")} Dependency */
/** @typedef {import("../Dependency").ExportsSpec} ExportsSpec */
/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
/** @typedef {import("../DependencyTemplate").CssDependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../ModuleGraph")} ModuleGraph */
/** @typedef {import("../NormalModuleFactory").ResourceDataWithData} ResourceDataWithData */
/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
/** @typedef {import("../css/CssGenerator")} CssGenerator */
/** @typedef {import("../css/CssParser").Range} Range */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
/** @typedef {import("../util/Hash")} Hash */
/** @typedef {import("../util/createHash").Algorithm} Algorithm */

const getCssParser = memoize(() => require("../css/CssParser"));

/**
 * @param {string} local css local
 * @param {CssModule} module module
 * @param {ChunkGraph} chunkGraph chunk graph
 * @param {RuntimeTemplate} runtimeTemplate runtime template
 * @returns {string} local ident
 */
const getLocalIdent = (local, module, chunkGraph, runtimeTemplate) => {
        const localIdentName =
                /** @type {CssGenerator} */
                (module.generator).localIdentName;
        const relativeResourcePath = makePathsRelative(
                /** @type {string} */
                (module.context),
                module.matchResource || module.resource,
                runtimeTemplate.compilation.compiler.root
        );
        const { hashFunction, hashDigest, hashDigestLength, hashSalt, uniqueName } =
                runtimeTemplate.outputOptions;
        const hash = createHash(/** @type {Algorithm} */ (hashFunction));

        if (hashSalt) {
                hash.update(hashSalt);
        }

        hash.update(relativeResourcePath);

        if (!/\[local\]/.test(localIdentName)) {
                hash.update(local);
        }

        const localIdentHash =
                /** @type {string} */
                (hash.digest(hashDigest)).slice(0, hashDigestLength);

        return runtimeTemplate.compilation
                .getPath(localIdentName, {
                        filename: relativeResourcePath,
                        hash: localIdentHash,
                        contentHash: localIdentHash,
                        chunkGraph,
                        module
                })
                .replace(/\[local\]/g, local)
                .replace(/\[uniqueName\]/g, /** @type {string} */ (uniqueName))
                .replace(/^((-?[0-9])|--)/, "_$1");
};

class CssLocalIdentifierDependency extends NullDependency {
        /**
         * @param {string} name name
         * @param {Range} range range
         * @param {string=} prefix prefix
         */
        constructor(name, range, prefix = "") {
                super();
                this.name = name;
                this.range = range;
                this.prefix = prefix;
                this._conventionNames = undefined;
                this._hashUpdate = undefined;
        }

        get type() {
                return "css local identifier";
        }

        /**
         * @param {string} name export name
         * @param {CssGeneratorExportsConvention} convention convention of the export name
         * @returns {string[]} convention results
         */
        getExportsConventionNames(name, convention) {
                if (this._conventionNames) {
                        return this._conventionNames;
                }
                this._conventionNames = cssExportConvention(this.name, convention);
                return this._conventionNames;
        }

        /**
         * Returns the exported names
         * @param {ModuleGraph} moduleGraph module graph
         * @returns {ExportsSpec | undefined} export names
         */
        getExports(moduleGraph) {
                const module = /** @type {CssModule} */ (moduleGraph.getParentModule(this));
                const convention =
                        /** @type {CssGenerator} */
                        (module.generator).convention;
                const names = this.getExportsConventionNames(this.name, convention);
                return {
                        exports: names.map(name => ({
                                name,
                                canMangle: true
                        })),
                        dependencies: undefined
                };
        }

        /**
         * Update the hash
         * @param {Hash} hash hash to be updated
         * @param {UpdateHashContext} context context
         * @returns {void}
         */
        updateHash(hash, { chunkGraph }) {
                if (this._hashUpdate === undefined) {
                        const module =
                                /** @type {CssModule} */
                                (chunkGraph.moduleGraph.getParentModule(this));
                        const generator =
                                /** @type {CssGenerator} */
                                (module.generator);
                        const names = this.getExportsConventionNames(
                                this.name,
                                generator.convention
                        );
                        this._hashUpdate = `exportsConvention|${JSON.stringify(names)}|localIdentName|${JSON.stringify(generator.localIdentName)}`;
                }
                hash.update(this._hashUpdate);
        }

        /**
         * @param {ObjectSerializerContext} context context
         */
        serialize(context) {
                const { write } = context;
                write(this.name);
                write(this.range);
                write(this.prefix);
                super.serialize(context);
        }

        /**
         * @param {ObjectDeserializerContext} context context
         */
        deserialize(context) {
                const { read } = context;
                this.name = read();
                this.range = read();
                this.prefix = read();
                super.deserialize(context);
        }
}

CssLocalIdentifierDependency.Template = class CssLocalIdentifierDependencyTemplate extends (
        NullDependency.Template
) {
        /**
         * @param {Dependency} dependency the dependency for which the template should be applied
         * @param {string} local local name
         * @param {DependencyTemplateContext} templateContext the context object
         * @returns {string} identifier
         */
        static getIdentifier(
                dependency,
                local,
                { module: m, chunkGraph, runtimeTemplate }
        ) {
                const dep = /** @type {CssLocalIdentifierDependency} */ (dependency);
                const module = /** @type {CssModule} */ (m);

                return (
                        dep.prefix +
                        getCssParser().escapeIdentifier(
                                getLocalIdent(local, module, chunkGraph, runtimeTemplate)
                        )
                );
        }

        /**
         * @param {Dependency} dependency the dependency for which the template should be applied
         * @param {ReplaceSource} source the current replace source which can be modified
         * @param {DependencyTemplateContext} templateContext the context object
         * @returns {void}
         */
        apply(dependency, source, templateContext) {
                const { module: m, moduleGraph, runtime, cssData } = templateContext;
                const dep = /** @type {CssLocalIdentifierDependency} */ (dependency);
                const module = /** @type {CssModule} */ (m);
                const convention =
                        /** @type {CssGenerator} */
                        (module.generator).convention;
                const names = dep.getExportsConventionNames(dep.name, convention);
                const usedNames =
                        /** @type {(string)[]} */
                        (
                                names
                                        .map(name =>
                                                moduleGraph.getExportInfo(module, name).getUsedName(name, runtime)
                                        )
                                        .filter(Boolean)
                        );
                const local = usedNames.length === 0 ? names[0] : usedNames[0];
                const identifier = CssLocalIdentifierDependencyTemplate.getIdentifier(
                        dep,
                        local,
                        templateContext
                );

                source.replace(dep.range[0], dep.range[1] - 1, identifier);

                for (const used of usedNames.concat(names)) {
                        cssData.exports.set(used, identifier);
                }
        }
};

makeSerializable(
        CssLocalIdentifierDependency,
        "webpack/lib/dependencies/CssLocalIdentifierDependency"
);

module.exports = CssLocalIdentifierDependency;