typescript - Angular 2 cannot find file name 'Set' -

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currently, updating project angular2 beta15 rc4. when compiling, getting error:

path/node_modules/@angular/common/src/directives/ng_class.d.ts(81,35): error ts2304: cannot find name 'set'.

my tsconfig.json looks following:

{   "compileroptions": {     "target": "es5",     "module": "commonjs",     "sourcemap": true,     "emitdecoratormetadata": true,     "experimentaldecorators": true,     "moduleresolution": "node",     "removecomments": false,     "noimplicitany": true,     "suppressimplicitanyindexerrors": false,     "declaration": true,     "outdir": "tmp/app"   },   "exclude": [     "node_modules",     "dist",     "tmp"   ] }

in main.ts have included:

/// <reference path="../typings/index.d.ts" /> /// <reference path="../typings/tsd.d.ts"/>

and typings.json:

{   "name": "my-project",   "dependencies": {},   "globaldependencies": {     "core-js": "registry:dt/core-js#0.0.0+20160602141332",     "jasmine": "registry:dt/jasmine#2.2.0+20160621224255",     "node": "registry:dt/node#6.0.0+20160621231320",     "moment": "registry:dt/moment#2.8.0+20160316155526",     "moment-node": "registry:dt/moment-node#2.11.1+20160329220348",     "es6-shim": "registry:dt/es6-shim#0.31.2+20160317120654"   } }

this error gone when change "target": "es5" "es6" in tsconfig.json, need use es5. assume issue comes when not include ///<reference path="../../node_modules/angular2/typings/browser.d.ts"/> however, according https://github.com/typings/typings/issues/151, can use typings/index.d.ts instead.

could please share opinion solve issue? thank in advance.

i think set provided polyfill es6. angular2 recommends using core-js (see https://angular.io/guide/quickstart):

we begin core-js's es2015/es6 shim monkey patches global context (window) essential features of es2015 (es6)

you can specify within typings.json file need install typings using command typings install.


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