Add support for records

lib/types.js

@@ -38,6 +38,43 @@ module.exports.generateTypeConversion = function (name, idlType, argAttrs, custo
     }
     ${name} = V;
   }`;
+  } else if (idlType.generic === "record") {
+    if (!handleNullable || !idlType.nullable) {
+      str += `
+  if (${name} === null && ${name} === undefined) {
+    ${name} = new Map;
+  } else {`;
+    }
+
+    str += `
+  if (typeof ${name} !== "object") {
+    throw new TypeError("The value provided is not an object");
+  } else {
+    const result = new Map;
+    const keys = Object.keys(${name});
+    for (let key of keys) {
+      let value = ${name}[key];
+      let typedKey = key;
+      let typedValue = value;`;
+
+    str += exports.generateTypeConversion('typedKey', idlType.idlType[0], [], customTypes).body;
+
+    const conv = exports.generateTypeConversion('typedValue', idlType.idlType[1], [], customTypes, {
+      handleNullable: true
+    });
+    Object.assign(requires, conv.requires);
+    str += conv.body;
+
+    str += `
+      result.set(typedKey, typedValue);
+    }
+    ${name} = result;
+  }`;
+
+    if (!handleNullable || !idlType.nullable) {
+      str += `
+  }`;
+    }
   } else if (conversions[idlType.idlType] || customTypes.has(idlType.idlType)) {
     const enforceRange = utils.getExtAttr(argAttrs, "EnforceRange");
     const clamp = utils.getExtAttr(argAttrs, "Clamp");
@@ -84,5 +121,5 @@ module.exports.generateTypeConversion = function (name, idlType, argAttrs, custo
 };
 
 module.exports.canHandleType = function (idlType, customTypes) {
-  return idlType.generic === "sequence" || conversions[idlType.idlType] || customTypes.has(idlType.idlType);
+  return idlType.generic === "sequence" || idlType.generic === "record" || conversions[idlType.idlType] || customTypes.has(idlType.idlType);
 };

package.json

@@ -7,7 +7,7 @@
     "co": "^4.6.0",
     "pn": "^1.0.0",
     "webidl-conversions": "^3.0.0",
-    "webidl2": "^2.0.11"
+    "webidl2": "^2.2.2"
   },
   "devDependencies": {},
   "scripts": {