1 files changed, 105 insertions, 0 deletions
diff --git a/packages/markdown/marked/docs/demo/worker.js b/packages/markdown/marked/docs/demo/worker.js
new file mode 100644
index 00000000..06b8befe
--- /dev/null
+++ b/packages/markdown/marked/docs/demo/worker.js
@@ -0,0 +1,105 @@
+/* globals marked, unfetch, ES6Promise */
+if (!self.Promise) {
+  self.importScripts('https://cdn.jsdelivr.net/npm/es6-promise/dist/es6-promise.js');
+  self.Promise = ES6Promise;
+}
+if (!self.fetch) {
+  self.importScripts('https://cdn.jsdelivr.net/npm/unfetch/dist/unfetch.umd.js');
+  self.fetch = unfetch;
+}
+
+var versionCache = {};
+var currentVersion;
+
+onunhandledrejection = function (e) {
+  throw e.reason;
+};
+
+onmessage = function (e) {
+  if (e.data.version === currentVersion) {
+    parse(e);
+  } else {
+    loadVersion(e.data.version).then(function () {
+      parse(e);
+    });
+  }
+};
+
+function parse(e) {
+  switch (e.data.task) {
+    case 'defaults':
+
+      var defaults = {};
+      if (typeof marked.getDefaults === 'function') {
+        defaults = marked.getDefaults();
+        delete defaults.renderer;
+      } else if ('defaults' in marked) {
+        for (var prop in marked.defaults) {
+          if (prop !== 'renderer') {
+            defaults[prop] = marked.defaults[prop];
+          }
+        }
+      }
+      postMessage({
+        task: e.data.task,
+        defaults: defaults
+      });
+      break;
+    case 'parse':
+      var startTime = new Date();
+      var lexed = marked.lexer(e.data.markdown, e.data.options);
+      var lexedList = [];
+      for (var i = 0; i < lexed.length; i++) {
+        var lexedLine = [];
+        for (var j in lexed[i]) {
+          lexedLine.push(j + ':' + jsonString(lexed[i][j]));
+        }
+        lexedList.push('{' + lexedLine.join(', ') + '}');
+      }
+      var parsed = marked.parser(lexed, e.data.options);
+      var endTime = new Date();
+      // setTimeout(function () {
+      postMessage({
+        task: e.data.task,
+        lexed: lexedList.join('\n'),
+        parsed: parsed,
+        time: endTime - startTime
+      });
+      // }, 10000);
+      break;
+  }
+}
+
+function jsonString(input) {
+  var output = (input + '')
+    .replace(/\n/g, '\\n')
+    .replace(/\r/g, '\\r')
+    .replace(/\t/g, '\\t')
+    .replace(/\f/g, '\\f')
+    .replace(/[\\"']/g, '\\$&')
+    .replace(/\u0000/g, '\\0');
+  return '"' + output + '"';
+};
+
+function loadVersion(ver) {
+  var promise;
+  if (versionCache[ver]) {
+    promise = Promise.resolve(versionCache[ver]);
+  } else {
+    promise = fetch(ver)
+      .then(function (res) { return res.text(); })
+      .then(function (text) {
+        versionCache[ver] = text;
+        return text;
+      });
+  }
+  return promise.then(function (text) {
+    try {
+      // eslint-disable-next-line no-new-func
+      Function(text)();
+    } catch (err) {
+      throw new Error('Cannot load that version of marked');
+    }
+    currentVersion = ver;
+  });
+}