flow like the river

VISUALIZACION/node_modules/parcel-bundler/lib/assets/GLSLAsset.js

@@ -0,0 +1,98 @@
+'use strict';
+
+function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }
+
+const Asset = require('../Asset');
+const localRequire = require('../utils/localRequire');
+const path = require('path');
+const promisify = require('../utils/promisify');
+const Resolver = require('../Resolver');
+
+class GLSLAsset extends Asset {
+  constructor(name, pkg, options) {
+    super(name, pkg, options);
+    this.type = 'js';
+  }
+
+  parse() {
+    var _this = this;
+
+    return _asyncToGenerator(function* () {
+      const glslifyDeps = yield localRequire('glslify-deps', _this.name);
+
+      // Use the Parcel resolver rather than the default glslify one.
+      // This adds support for parcel features like alises, and tilde paths.
+      const resolver = new Resolver({
+        extensions: ['.glsl', '.vert', '.frag'],
+        rootDir: _this.options.rootDir
+      });
+
+      // Parse and collect dependencies with glslify-deps
+      let cwd = path.dirname(_this.name);
+      let depper = glslifyDeps({
+        cwd,
+        resolve: (() => {
+          var _ref = _asyncToGenerator(function* (target, opts, next) {
+            try {
+              let res = yield resolver.resolve(target, path.join(opts.basedir, 'index'));
+              next(null, res.path);
+            } catch (err) {
+              next(err);
+            }
+          });
+
+          return function resolve(_x, _x2, _x3) {
+            return _ref.apply(this, arguments);
+          };
+        })()
+      });
+
+      return yield promisify(depper.inline.bind(depper))(_this.contents, cwd);
+    })();
+  }
+
+  collectDependencies() {
+    var _iteratorNormalCompletion = true;
+    var _didIteratorError = false;
+    var _iteratorError = undefined;
+
+    try {
+      for (var _iterator = this.ast[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+        let dep = _step.value;
+
+        if (!dep.entry) {
+          this.addDependency(dep.file, { includedInParent: true });
+        }
+      }
+    } catch (err) {
+      _didIteratorError = true;
+      _iteratorError = err;
+    } finally {
+      try {
+        if (!_iteratorNormalCompletion && _iterator.return) {
+          _iterator.return();
+        }
+      } finally {
+        if (_didIteratorError) {
+          throw _iteratorError;
+        }
+      }
+    }
+  }
+
+  generate() {
+    var _this2 = this;
+
+    return _asyncToGenerator(function* () {
+      // Generate the bundled glsl file
+      const glslifyBundle = yield localRequire('glslify-bundle', _this2.name);
+      let glsl = glslifyBundle(_this2.ast);
+
+      return {
+        js: `module.exports=${JSON.stringify(glsl)};`
+      };
+    })();
+  }
+}
+
+module.exports = GLSLAsset;