Project Init

node_modules/postcss-modules/build/Parser.js

@@ -0,0 +1,87 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _icssUtils = require("icss-utils");
+
+// Initially 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() {
+    const parser = this;
+    return {
+      postcssPlugin: "css-modules-parser",
+
+      async OnceExit(css) {
+        await Promise.all(parser.fetchAllImports(css));
+        parser.linkImportedSymbols(css);
+        return parser.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, _icssUtils.replaceSymbols)(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();
+  }
+
+  async fetchImport(importNode, relativeTo, depNr) {
+    const file = importNode.selector.match(importRegexp)[1];
+    const depTrace = this.trace + String.fromCharCode(depNr);
+    const exports = await this.pathFetcher(file, relativeTo, depTrace);
+
+    try {
+      importNode.each(decl => {
+        if (decl.type == "decl") {
+          this.translations[decl.prop] = exports[decl.value];
+        }
+      });
+      importNode.remove();
+    } catch (err) {
+      console.log(err);
+    }
+  }
+
+}
+
+exports.default = Parser;