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- "use strict";
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.defaultJoin = void 0;
- var _path = _interopRequireDefault(require("path"));
- var _fs = _interopRequireDefault(require("fs"));
- function _interopRequireDefault(obj) {
- return obj && obj.__esModule ? obj : {
- default: obj
- };
- }
- const compose = (f, g)=>(...args)=>f(g(...args));
- const simpleJoin = compose(_path.default.normalize, _path.default.join);
- const defaultJoin = createJoinForPredicate(function predicate(_, uri, base, i, next) {
- const absolute = simpleJoin(base, uri);
- return _fs.default.existsSync(absolute) ? absolute : next(i === 0 ? absolute : null);
- }, "defaultJoin");
- exports.defaultJoin = defaultJoin;
- function* createIterator(arr) {
- for (const i of arr){
- yield i;
- }
- }
- /**
- * Define a join function by a predicate that tests possible base paths from an iterator.
- *
- * The `predicate` is of the form:
- *
- * ```
- * function(filename, uri, base, i, next):string|null
- * ```
- *
- * Given the uri and base it should either return:
- * - an absolute path success
- * - a call to `next(null)` as failure
- * - a call to `next(absolute)` where absolute is placeholder and the iterator continues
- *
- * The value given to `next(...)` is only used if success does not eventually occur.
- *
- * The `file` value is typically unused but useful if you would like to differentiate behaviour.
- *
- * You can write a much simpler function than this if you have specific requirements.
- *
- * @param {function} predicate A function that tests values
- * @param {string} [name] Optional name for the resulting join function
- */ function createJoinForPredicate(predicate, name) {
- /**
- * A factory for a join function with logging.
- *
- * @param {string} filename The current file being processed
- * @param {{debug:function|boolean,root:string}} options An options hash
- */ function join(filename, options) {
- const log = createDebugLogger(options.debug);
- /**
- * Join function proper.
- *
- * For absolute uri only `uri` will be provided. In this case we substitute any `root` given in options.
- *
- * @param {string} uri A uri path, relative or absolute
- * @param {string|Iterator.<string>} [baseOrIteratorOrAbsent] Optional absolute base path or iterator thereof
- * @return {string} Just the uri where base is empty or the uri appended to the base
- */ return function joinProper(uri, baseOrIteratorOrAbsent) {
- const iterator = typeof baseOrIteratorOrAbsent === "undefined" && createIterator([
- options.root
- ]) || typeof baseOrIteratorOrAbsent === "string" && createIterator([
- baseOrIteratorOrAbsent
- ]) || baseOrIteratorOrAbsent;
- const result = runIterator([]);
- log(createJoinMsg, [
- filename,
- uri,
- result,
- result.isFound
- ]);
- return typeof result.absolute === "string" ? result.absolute : uri;
- function runIterator(accumulator) {
- const nextItem = iterator.next();
- var base = !nextItem.done && nextItem.value;
- if (typeof base === "string") {
- const element = predicate(filename, uri, base, accumulator.length, next);
- if (typeof element === "string" && _path.default.isAbsolute(element)) {
- return Object.assign(accumulator.concat(base), {
- isFound: true,
- absolute: element
- });
- } else if (Array.isArray(element)) {
- return element;
- } else {
- throw new Error("predicate must return an absolute path or the result of calling next()");
- }
- } else {
- return accumulator;
- }
- function next(fallback) {
- return runIterator(Object.assign(accumulator.concat(base), typeof fallback === "string" && {
- absolute: fallback
- }));
- }
- }
- };
- }
- function toString() {
- return "[Function: " + name + "]";
- }
- return Object.assign(join, name && {
- valueOf: toString,
- toString: toString
- });
- }
- /**
- * Format a debug message.
- *
- * @param {string} file The file being processed by webpack
- * @param {string} uri A uri path, relative or absolute
- * @param {Array.<string>} bases Absolute base paths up to and including the found one
- * @param {boolean} isFound Indicates the last base was correct
- * @return {string} Formatted message
- */ function createJoinMsg(file, uri, bases, isFound) {
- return [
- "resolve-url-loader: " + pathToString(file) + ": " + uri
- ].concat(bases.map(pathToString).filter(Boolean)).concat(isFound ? "FOUND" : "NOT FOUND").join("\n ");
- /**
- * If given path is within `process.cwd()` then show relative posix path, otherwise show absolute posix path.
- *
- * @param {string} absolute An absolute path
- * @return {string} A relative or absolute path
- */ function pathToString(absolute) {
- if (!absolute) {
- return null;
- } else {
- const relative = _path.default.relative(process.cwd(), absolute).split(_path.default.sep);
- return (relative[0] === ".." ? absolute.split(_path.default.sep) : [
- "."
- ].concat(relative).filter(Boolean)).join("/");
- }
- }
- }
- exports.createJoinMsg = createJoinMsg;
- /**
- * A factory for a log function predicated on the given debug parameter.
- *
- * The logging function created accepts a function that formats a message and parameters that the function utilises.
- * Presuming the message function may be expensive we only call it if logging is enabled.
- *
- * The log messages are de-duplicated based on the parameters, so it is assumed they are simple types that stringify
- * well.
- *
- * @param {function|boolean} debug A boolean or debug function
- * @return {function(function, array)} A logging function possibly degenerate
- */ function createDebugLogger(debug) {
- const log = !!debug && (typeof debug === "function" ? debug : console.log);
- const cache = {};
- return log ? actuallyLog : noop;
- function noop() {}
- function actuallyLog(msgFn, params) {
- const key = JSON.stringify(params);
- if (!cache[key]) {
- cache[key] = true;
- log(msgFn.apply(null, params));
- }
- }
- }
- exports.createDebugLogger = createDebugLogger;
- //# sourceMappingURL=join-function.js.map
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