docs：更新文档

node_modules/postcss-modules/build/css-loader-core/loader.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _postcss = require("postcss");
+
+var _postcss2 = _interopRequireDefault(_postcss);
+
+var _fs = require("fs");
+
+var _fs2 = _interopRequireDefault(_fs);
+
+var _path = require("path");
+
+var _path2 = _interopRequireDefault(_path);
+
+var _parser = require("./parser");
+
+var _parser2 = _interopRequireDefault(_parser);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+// Copied from https://github.com/css-modules/css-modules-loader-core
+
+class Core {
+  constructor(plugins) {
+    this.plugins = plugins || Core.defaultPlugins;
+  }
+
+  load(sourceString, sourcePath, trace, pathFetcher) {
+    let parser = new _parser2.default(pathFetcher, trace);
+
+    return (0, _postcss2.default)(this.plugins.concat([parser.plugin])).process(sourceString, { from: "/" + sourcePath }).then(result => {
+      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;
+  } else if (a.length > b.length) {
+    return a.substring(0, b.length) <= b ? -1 : 1;
+  } else {
+    return a < b ? -1 : 1;
+  }
+};
+
+class FileSystemLoader {
+  constructor(root, plugins) {
+    this.root = root;
+    this.sources = {};
+    this.traces = {};
+    this.importNr = 0;
+    this.core = new Core(plugins);
+    this.tokensByFile = {};
+  }
+
+  fetch(_newPath, relativeTo, _trace) {
+    let newPath = _newPath.replace(/^["']|["']$/g, ""),
+        trace = _trace || String.fromCharCode(this.importNr++);
+    return new Promise((resolve, reject) => {
+      let relativeDir = _path2.default.dirname(relativeTo),
+          rootRelativePath = _path2.default.resolve(relativeDir, newPath),
+          fileRelativePath = _path2.default.resolve(_path2.default.join(this.root, relativeDir), newPath);
+
+      // if the path is not relative or absolute, try to resolve it in node_modules
+      if (newPath[0] !== "." && newPath[0] !== "/") {
+        try {
+          fileRelativePath = require.resolve(newPath);
+        } catch (e) {
+          // noop
+        }
+      }
+
+      const tokens = this.tokensByFile[fileRelativePath];
+      if (tokens) {
+        return resolve(tokens);
+      }
+
+      _fs2.default.readFile(fileRelativePath, "utf-8", (err, source) => {
+        if (err) reject(err);
+        this.core.load(source, rootRelativePath, trace, this.fetch.bind(this)).then(({ injectableSource, exportTokens }) => {
+          this.sources[fileRelativePath] = injectableSource;
+          this.traces[trace] = fileRelativePath;
+          this.tokensByFile[fileRelativePath] = exportTokens;
+          resolve(exportTokens);
+        }, reject);
+      });
+    });
+  }
+
+  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;

node_modules/postcss-modules/build/css-loader-core/parser.js

@@ -0,0 +1,74 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _icssReplaceSymbols = require("icss-replace-symbols");
+
+var _icssReplaceSymbols2 = _interopRequireDefault(_icssReplaceSymbols);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+// Copied from https://github.com/css-modules/css-modules-loader-core
+
+const importRegexp = /^:import\((.+)\)$/;
+class Parser {
+  constructor(pathFetcher, trace) {
+    this.pathFetcher = pathFetcher;
+    this.plugin = this.plugin.bind(this);
+    this.exportTokens = {};
+    this.translations = {};
+    this.trace = trace;
+  }
+
+  plugin(css) {
+    return Promise.all(this.fetchAllImports(css)).then(() => this.linkImportedSymbols(css)).then(() => this.extractExports(css));
+  }
+
+  fetchAllImports(css) {
+    let imports = [];
+    css.each(node => {
+      if (node.type == "rule" && node.selector.match(importRegexp)) {
+        imports.push(this.fetchImport(node, css.source.input.from, imports.length));
+      }
+    });
+    return imports;
+  }
+
+  linkImportedSymbols(css) {
+    (0, _icssReplaceSymbols2.default)(css, this.translations);
+  }
+
+  extractExports(css) {
+    css.each(node => {
+      if (node.type == "rule" && node.selector == ":export") this.handleExport(node);
+    });
+  }
+
+  handleExport(exportNode) {
+    exportNode.each(decl => {
+      if (decl.type == "decl") {
+        Object.keys(this.translations).forEach(translation => {
+          decl.value = decl.value.replace(translation, this.translations[translation]);
+        });
+        this.exportTokens[decl.prop] = decl.value;
+      }
+    });
+    exportNode.remove();
+  }
+
+  fetchImport(importNode, relativeTo, depNr) {
+    let file = importNode.selector.match(importRegexp)[1],
+        depTrace = this.trace + String.fromCharCode(depNr);
+    return this.pathFetcher(file, relativeTo, depTrace).then(exports => {
+      importNode.each(decl => {
+        if (decl.type == "decl") {
+          this.translations[decl.prop] = exports[decl.value];
+        }
+      });
+      importNode.remove();
+    }, err => console.log(err));
+  }
+}
+exports.default = Parser;