emaui/node_modules/postcss-modules/build/FileSystemLoader.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _postcss = _interopRequireDefault(require("postcss"));

var _path = _interopRequireDefault(require("path"));

var _Parser = _interopRequireDefault(require("./Parser"));

var _fs = require("./fs");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

// Initially copied from https://github.com/css-modules/css-modules-loader-core
class Core {
  constructor(plugins) {
    this.plugins = plugins || Core.defaultPlugins;
  }

  async load(sourceString, sourcePath, trace, pathFetcher) {
    const parser = new _Parser.default(pathFetcher, trace);
    const plugins = this.plugins.concat([parser.plugin()]);
    const result = await (0, _postcss.default)(plugins).process(sourceString, {
      from: sourcePath
    });
    return {
      injectableSource: result.css,
      exportTokens: parser.exportTokens
    };
  }

} // Sorts dependencies in the following way:
// AAA comes before AA and A
// AB comes after AA and before A
// All Bs come after all As
// This ensures that the files are always returned in the following order:
// - In the order they were required, except
// - After all their dependencies


const traceKeySorter = (a, b) => {
  if (a.length < b.length) {
    return a < b.substring(0, a.length) ? -1 : 1;
  }

  if (a.length > b.length) {
    return a.substring(0, b.length) <= b ? -1 : 1;
  }

  return a < b ? -1 : 1;
};

class FileSystemLoader {
  constructor(root, plugins, fileResolve) {
    if (root === "/" && process.platform === "win32") {
      const cwdDrive = process.cwd().slice(0, 3);

      if (!/^[A-Za-z]:\\$/.test(cwdDrive)) {
        throw new Error(`Failed to obtain root from "${process.cwd()}".`);
      }

      root = cwdDrive;
    }

    this.root = root;
    this.fileResolve = fileResolve;
    this.sources = {};
    this.traces = {};
    this.importNr = 0;
    this.core = new Core(plugins);
    this.tokensByFile = {};
    this.fs = (0, _fs.getFileSystem)();
  }

  async fetch(_newPath, relativeTo, _trace) {
    const newPath = _newPath.replace(/^["']|["']$/g, "");

    const trace = _trace || String.fromCharCode(this.importNr++);

    const useFileResolve = typeof this.fileResolve === "function";
    const fileResolvedPath = useFileResolve ? await this.fileResolve(newPath, relativeTo) : await Promise.resolve();

    if (fileResolvedPath && !_path.default.isAbsolute(fileResolvedPath)) {
      throw new Error('The returned path from the "fileResolve" option must be absolute.');
    }

    const relativeDir = _path.default.dirname(relativeTo);

    const rootRelativePath = fileResolvedPath || _path.default.resolve(relativeDir, newPath);

    let fileRelativePath = fileResolvedPath || _path.default.resolve(_path.default.resolve(this.root, relativeDir), newPath); // if the path is not relative or absolute, try to resolve it in node_modules


    if (!useFileResolve && newPath[0] !== "." && !_path.default.isAbsolute(newPath)) {
      try {
        fileRelativePath = require.resolve(newPath);
      } catch (e) {// noop
      }
    }

    const tokens = this.tokensByFile[fileRelativePath];
    if (tokens) return tokens;
    return new Promise((resolve, reject) => {
      this.fs.readFile(fileRelativePath, "utf-8", async (err, source) => {
        if (err) reject(err);
        const {
          injectableSource,
          exportTokens
        } = await this.core.load(source, rootRelativePath, trace, this.fetch.bind(this));
        this.sources[fileRelativePath] = injectableSource;
        this.traces[trace] = fileRelativePath;
        this.tokensByFile[fileRelativePath] = exportTokens;
        resolve(exportTokens);
      });
    });
  }

  get finalSource() {
    const traces = this.traces;
    const sources = this.sources;
    let written = new Set();
    return Object.keys(traces).sort(traceKeySorter).map(key => {
      const filename = traces[key];

      if (written.has(filename)) {
        return null;
      }

      written.add(filename);
      return sources[filename];
    }).join("");
  }

}

exports.default = FileSystemLoader;