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author | 2020-11-16 00:10:28 +0100 | |
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committer | 2020-11-16 00:10:28 +0100 | |
commit | e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch) | |
tree | 55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/webpack/lib/Template.js | |
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api, login, auth
Diffstat (limited to 'node_modules/webpack/lib/Template.js')
-rw-r--r-- | node_modules/webpack/lib/Template.js | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/Template.js b/node_modules/webpack/lib/Template.js new file mode 100644 index 0000000..0543957 --- /dev/null +++ b/node_modules/webpack/lib/Template.js @@ -0,0 +1,291 @@ +/* + MIT License http://www.opensource.org/licenses/mit-license.php + Author Tobias Koppers @sokra +*/ +/** @typedef {import("./Module")} Module */ +/** @typedef {import("./Chunk")} Chunk */ +/** @typedef {import("./ModuleTemplate")} ModuleTemplate */ +/** @typedef {import("webpack-sources").ConcatSource} ConcatSource */ + +const { ConcatSource } = require("webpack-sources"); +const HotUpdateChunk = require("./HotUpdateChunk"); + +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 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 {import("webpack-sources").Source} Source */ + +/** + * @typedef {Object} HasId + * @property {number | string} id + */ + +/** + * @typedef {function(Module, number): boolean} ModuleFilterPredicate + */ + +/** + * @param {HasId} a first id object to be sorted + * @param {HasId} b second id object to be sorted against + * @returns {-1|0|1} the sort value + */ +const stringifyIdSortPredicate = (a, b) => { + const aId = a.id + ""; + const bId = b.id + ""; + if (aId < bId) return -1; + if (aId > bId) return 1; + return 0; +}; + +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 <_ + number> if number is too big + /** + * + * @param {number} n number to convert to ident + * @returns {string} returns single character ident + */ + static numberToIdentifer(n) { + // lower case + if (n < DELTA_A_TO_Z) { + return String.fromCharCode(START_LOWERCASE_ALPHABET_CODE + n); + } + + // upper case + if (n < DELTA_A_TO_Z * 2) { + return String.fromCharCode( + START_UPPERCASE_ALPHABET_CODE + n - DELTA_A_TO_Z + ); + } + + // use multiple letters + return ( + Template.numberToIdentifer(n % (2 * DELTA_A_TO_Z)) + + Template.numberToIdentifer(Math.floor(n / (2 * DELTA_A_TO_Z))) + ); + } + + /** + * + * @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) { + if (typeof module.id !== "number") return false; + if (maxId < module.id) maxId = /** @type {number} */ (module.id); + if (minId > module.id) minId = /** @type {number} */ (module.id); + } + if (minId < 16 + ("" + minId).length) { + // add minId x ',' instead of 'Array(minId).concat(…)' + minId = 0; + } + const objectOverhead = modules + .map(module => (module.id + "").length + 2) + .reduce((a, b) => a + b, -1); + const arrayOverhead = + minId === 0 ? maxId : 16 + ("" + minId).length + maxId; + return arrayOverhead < objectOverhead ? [minId, maxId] : false; + } + + /** + * @param {Chunk} chunk chunk whose modules will be rendered + * @param {ModuleFilterPredicate} filterFn function used to filter modules from chunk to render + * @param {ModuleTemplate} moduleTemplate ModuleTemplate instance used to render modules + * @param {TODO | TODO[]} dependencyTemplates templates needed for each module to render dependencies + * @param {string=} prefix applying prefix strings + * @returns {ConcatSource} rendered chunk modules in a Source object + */ + static renderChunkModules( + chunk, + filterFn, + moduleTemplate, + dependencyTemplates, + prefix = "" + ) { + const source = new ConcatSource(); + const modules = chunk.getModules().filter(filterFn); + let removedModules; + if (chunk instanceof HotUpdateChunk) { + removedModules = chunk.removedModules; + } + if ( + modules.length === 0 && + (!removedModules || removedModules.length === 0) + ) { + source.add("[]"); + return source; + } + /** @type {{id: string|number, source: Source|string}[]} */ + const allModules = modules.map(module => { + return { + id: module.id, + source: moduleTemplate.render(module, dependencyTemplates, { + chunk + }) + }; + }); + if (removedModules && removedModules.length > 0) { + for (const id of removedModules) { + allModules.push({ + id, + source: "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"); + allModules.sort(stringifyIdSortPredicate).forEach((module, idx) => { + if (idx !== 0) { + source.add(",\n"); + } + source.add(`\n/***/ ${JSON.stringify(module.id)}:\n`); + source.add(module.source); + }); + source.add(`\n\n${prefix}}`); + } + return source; + } +} + +module.exports = Template; |