flow like the river

BACK_BACK/node_modules/parcel-bundler/lib/assets/SASSAsset.js

@@ -0,0 +1,155 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));
+
+function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }
+
+function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
+
+function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
+
+const Asset = require('../Asset');
+
+const localRequire = require('../utils/localRequire');
+
+const _require = require('@parcel/utils'),
+      promisify = _require.promisify;
+
+const path = require('path');
+
+const os = require('os');
+
+const Resolver = require('../Resolver');
+
+const parseCSSImport = require('../utils/parseCSSImport');
+
+class SASSAsset extends Asset {
+  constructor(name, options) {
+    super(name, options);
+    this.type = 'css';
+  }
+
+  parse(code) {
+    var _this = this;
+
+    return (0, _asyncToGenerator2.default)(function* () {
+      // node-sass or dart-sass should be installed locally in the module that's being required
+      let sass = yield getSassRuntime(_this.name);
+      let render = promisify(sass.render.bind(sass));
+      const resolver = new Resolver({
+        extensions: ['.scss', '.sass'],
+        rootDir: _this.options.rootDir
+      });
+      let opts = (yield _this.getConfig(['.sassrc', '.sassrc.js'], {
+        packageKey: 'sass'
+      })) || {};
+      opts.includePaths = (opts.includePaths ? opts.includePaths.map(includePath => path.resolve(includePath)) : []).concat(path.dirname(_this.name));
+      opts.data = opts.data ? opts.data + os.EOL + code : code;
+      let type = _this.options.rendition ? _this.options.rendition.type : path.extname(_this.name).toLowerCase().replace('.', '');
+      opts.indentedSyntax = typeof opts.indentedSyntax === 'boolean' ? opts.indentedSyntax : type === 'sass';
+      opts.importer = opts.importer || [];
+      opts.importer = Array.isArray(opts.importer) ? opts.importer : [opts.importer];
+      opts.importer.push((url, prev, done) => {
+        url = url.replace(/^file:\/\//, '');
+        url = parseCSSImport(url);
+        resolver.resolve(url, prev === 'stdin' ? _this.name : prev).then(resolved => resolved.path).catch(() => url).then(file => done({
+          file
+        })).catch(err => done(normalizeError(err)));
+      });
+
+      if (_this.options.sourceMaps) {
+        opts.sourceMap = true;
+        opts.file = _this.name;
+        opts.outFile = _this.name;
+        opts.omitSourceMapUrl = true;
+        opts.sourceMapContents = true;
+      }
+
+      try {
+        return yield render(opts);
+      } catch (err) {
+        // Format the error so it can be handled by parcel's prettyError
+        if (err.formatted) {
+          throw sassToCodeFrame(err);
+        } // Throw original error if there is no codeFrame
+
+
+        throw err;
+      }
+    })();
+  }
+
+  collectDependencies() {
+    var _iterator = _createForOfIteratorHelper(this.ast.stats.includedFiles),
+        _step;
+
+    try {
+      for (_iterator.s(); !(_step = _iterator.n()).done;) {
+        let dep = _step.value;
+        this.addDependency(dep, {
+          includedInParent: true
+        });
+      }
+    } catch (err) {
+      _iterator.e(err);
+    } finally {
+      _iterator.f();
+    }
+  }
+
+  generate() {
+    return [{
+      type: 'css',
+      value: this.ast ? this.ast.css.toString() : '',
+      map: this.ast && this.ast.map ? JSON.parse(this.ast.map.toString()) : undefined
+    }];
+  }
+
+}
+
+module.exports = SASSAsset;
+
+function getSassRuntime(_x) {
+  return _getSassRuntime.apply(this, arguments);
+}
+
+function _getSassRuntime() {
+  _getSassRuntime = (0, _asyncToGenerator2.default)(function* (searchPath) {
+    try {
+      return yield localRequire('node-sass', searchPath, true);
+    } catch (e) {
+      // If node-sass is not used locally, install dart-sass, as this causes no freezing issues
+      return localRequire('sass', searchPath);
+    }
+  });
+  return _getSassRuntime.apply(this, arguments);
+}
+
+function sassToCodeFrame(err) {
+  let error = new Error(err.message);
+  error.codeFrame = err.formatted;
+  error.stack = err.stack;
+  error.fileName = err.file;
+  error.loc = {
+    line: err.line,
+    column: err.column
+  };
+  return error;
+} // Ensures an error inherits from Error
+
+
+function normalizeError(err) {
+  let message = 'Unknown error';
+
+  if (err) {
+    if (err instanceof Error) {
+      return err;
+    }
+
+    message = err.stack || err.message || err;
+  }
+
+  return new Error(message);
+}