在 tsconfig.json 修复中针对 ES6 找不到名称答案

【问题标题】：Targeting ES6 in tsconfig.json fixes cannot find name在 tsconfig.json 修复中针对 ES6 找不到名称
【发布时间】：2018-04-18 19:21:51
【问题描述】：

我正在阅读关于 AngularJS 的教程。代码可以在https://github.com/planetoftheweb/learnangular/tree/02_01e找到
我正在使用这个代码。当我运行 npm start 时，我收到此错误：

node_modules/@angular/common/src/pipes/async_pipe.d.ts(39,38): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/compiler/src/directive_normalizer.d.ts(19,100): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/compiler/src/directive_normalizer.d.ts(21,74): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/compiler/src/offline_compiler.d.ts(31,124): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/compiler/src/resource_loader.d.ts(13,23): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/compiler/src/runtime_compiler.d.ts(40,49): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/compiler/src/runtime_compiler.d.ts(42,65): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/compiler/src/util.d.ts(35,18): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/compiler/src/util.d.ts(36,46): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/application_init.d.ts(16,18): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/application_ref.d.ts(106,67): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/application_ref.d.ts(122,101): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/application_ref.d.ts(148,67): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/application_ref.d.ts(150,101): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/facade/lang.d.ts(12,17): error TS2304: Cannot find name 'Map'.
node_modules/@angular/core/src/facade/lang.d.ts(13,17): error TS2304: Cannot find name 'Set'.
node_modules/@angular/core/src/linker/compiler.d.ts(53,49): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/linker/compiler.d.ts(61,65): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/linker/ng_module_factory_loader.d.ts(14,34): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/core/src/linker/system_js_ng_module_factory_loader.d.ts(28,25): error TS2304: Cannot find name 'Promise'.
node_modules/@angular/platform-browser-dynamic/src/resource_loader/resource_loader_impl.d.ts(10,23): error TS2304: Cannot find name 'Promise'.
node_modules/@types/core-js/index.d.ts(47,36): error TS2304: Cannot find name 'Iterable'.
node_modules/@types/core-js/index.d.ts(353,48): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(354,52): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(355,34): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(356,34): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(357,34): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(358,61): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(359,60): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(360,65): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(360,97): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(361,60): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(362,58): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(363,59): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(364,58): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(365,61): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(365,117): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(366,42): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(368,81): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(369,78): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(370,76): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(371,73): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(434,6): error TS2304: Cannot find name 'Symbol'.
node_modules/@types/core-js/index.d.ts(459,39): error TS2304: Cannot find name 'Promise'.
node_modules/@types/core-js/index.d.ts(467,59): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(468,59): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(470,48): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(471,69): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(475,40): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(477,48): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(693,55): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(694,45): error TS2304: Cannot find name 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(710,46): error TS2304: Cannot find name 'Iterable'.
node_modules/@types/core-js/index.d.ts(711,43): error TS2304: Cannot find name 'Iterable'.
node_modules/@types/core-js/index.d.ts(826,20): error TS2304: Cannot find name 'PromiseConstructor'.
node_modules/@types/core-js/index.d.ts(841,32): error TS2304: Cannot find name 'Iterable'.
node_modules/@types/core-js/index.d.ts(845,39): error TS2304: Cannot find name 'Iterable'.
node_modules/@types/core-js/index.d.ts(845,53): error TS2304: Cannot find name 'Iterator'.
node_modules/@types/core-js/index.d.ts(856,35): error TS2304: Cannot find name 'Promise'.
node_modules/@types/core-js/index.d.ts(1479,36): error TS2339: Property 'for' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1483,43): error TS2339: Property 'hasInstance' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1487,50): error TS2339: Property 'isConcatSpreadable' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1491,40): error TS2339: Property 'iterator' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1495,38): error TS2339: Property 'keyFor' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1499,37): error TS2339: Property 'match' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1503,39): error TS2339: Property 'replace' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1507,38): error TS2339: Property 'search' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1511,39): error TS2339: Property 'species' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1515,37): error TS2339: Property 'split' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1519,43): error TS2339: Property 'toPrimitive' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1523,43): error TS2339: Property 'toStringTag' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(1527,43): error TS2339: Property 'unscopables' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2294,36): error TS2339: Property 'for' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2298,43): error TS2339: Property 'hasInstance' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2302,50): error TS2339: Property 'isConcatSpreadable' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2306,40): error TS2339: Property 'iterator' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2310,38): error TS2339: Property 'keyFor' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2314,37): error TS2339: Property 'match' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2318,39): error TS2339: Property 'replace' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2322,38): error TS2339: Property 'search' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2326,39): error TS2339: Property 'species' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2330,37): error TS2339: Property 'split' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2334,43): error TS2339: Property 'toPrimitive' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2338,43): error TS2339: Property 'toStringTag' does not exist on type 'SymbolConstructor'.
node_modules/@types/core-js/index.d.ts(2342,43): error TS2339: Property 'unscopables' does not exist on type 'SymbolConstructor'.
node_modules/rxjs/Observable.d.ts(10,66): error TS2304: Cannot find name 'Promise'.
node_modules/rxjs/Observable.d.ts(66,60): error TS2304: Cannot find name 'Promise'.
node_modules/rxjs/Observable.d.ts(66,70): error TS2304: Cannot find name 'Promise'.
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! learn-angular@1.0.0 start: `tsc && concurrently "tsc -w" "lite-server" `
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the learn-angular@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/craigbertrand/.npm/_logs/2017-11-06T15_09_02_610Z-debug.log

运行 npm -v 记录 5.5.1

如果我将tsconfig.json 中的目标从 es5 更改为 es6，一切正常。然而，我在其他地方读到过，以 es5 为目标基本上是标准的，如果你以 es6 为目标，那么你就有不支持旧浏览器的危险。这仍然是真的吗？如果它是不好的做法，有什么更好的解决方案？

【问题讨论】：

大部分浏览器还不支持 ES6，比如 IE，如果你的目标是 ES6，那么你需要一个像 babel 或 traceur js 这样的编译器来编译代码，以便浏览器可以理解它

标签： json node.js angular typescript npm

【解决方案1】：

在 GitHub 存储库中有一个 issue 用于此目的。那里的一个 cmets 提供了一个似乎对少数人有用的解决方案：

...通过将此行添加到我的 tsconfig.json 文件来解决它 "lib" : ["es2015", "es2015.iterable", "dom"]

正如您所建议的，以 ES5 为目标可以提供更好的浏览器支持。一旦你以 ES6 为目标，你将需要一个支持 ES6 的浏览器，这取决于你的受众，这可能是也可能不是问题。就个人而言，我会以 ES5 为目标以获得更高的兼容性。

【讨论】：