错误 TS2300：node_modules/@types/core-js/index.d.ts 中的标识符“PropertyKey”重复
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【中文标题】错误 TS2300：node_modules/@types/core-js/index.d.ts 中的标识符“PropertyKey”重复【英文标题】：error TS2300: Duplicate identifier 'PropertyKey' in node_modules/@types/core-js/index.d.ts 【发布时间】：2017-04-13 02:39:18 【问题描述】：我在 Visual Studio Code IDE 的 node_modules/@types/core-js/index.d.ts 中有这些错误：
当我运行 npm start 为应用程序提供服务时，我得到：
node_modules/@types/core-js/index.d.ts(21,14): error TS2300: Duplicate identifier 'PropertyKey'.
node_modules/@types/core-js/index.d.ts(85,5): error TS2687: All declarations of 'name' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(145,5): error TS2403: Subsequent variable declarations must have the same type. Variable '[Symbol.unscopables]' must be of type ' copyWithin: boolean; entries: boolean; fill: boolean; find: boolean; findIndex: boolean; keys: ...', but here has type 'any'.
node_modules/@types/core-js/index.d.ts(262,5): error TS2687: All declarations of 'flags' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(276,5): error TS2687: All declarations of 'EPSILON' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(311,5): error TS2687: All declarations of 'MAX_SAFE_INTEGER' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(318,5): error TS2687: All declarations of 'MIN_SAFE_INTEGER' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(457,5): error TS2403: Subsequent variable declarations must have the same type. Variable '[Symbol.toStringTag]' must be of type '"Symbol"', but here has type 'string'.
node_modules/@types/core-js/index.d.ts(457,5): error TS2687: All declarations of '[Symbol.toStringTag]' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(464,5): error TS2687: All declarations of 'prototype' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(492,5): error TS2687: All declarations of 'hasInstance' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(498,5): error TS2687: All declarations of 'isConcatSpreadable' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(504,5): error TS2687: All declarations of 'iterator' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(510,5): error TS2687: All declarations of 'match' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(516,5): error TS2687: All declarations of 'replace' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(522,5): error TS2687: All declarations of 'search' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(528,5): error TS2687: All declarations of 'species' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(534,5): error TS2687: All declarations of 'split' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(540,5): error TS2687: All declarations of 'toPrimitive' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(546,5): error TS2687: All declarations of 'toStringTag' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(552,5): error TS2687: All declarations of 'unscopables' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(609,5): error TS2403: Subsequent variable declarations must have the same type. Variable '[Symbol.toStringTag]' must be of type '"Math"', but here has type 'string'.
node_modules/@types/core-js/index.d.ts(609,5): error TS2687: All declarations of '[Symbol.toStringTag]' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(613,5): error TS2403: Subsequent variable declarations must have the same type. Variable '[Symbol.toStringTag]' must be of type '"JSON"', but here has type 'string'.
node_modules/@types/core-js/index.d.ts(613,5): error TS2687: All declarations of '[Symbol.toStringTag]' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(628,5): error TS2687: All declarations of 'size' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(634,5): error TS2687: All declarations of 'prototype' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(645,5): error TS2687: All declarations of 'size' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(651,5): error TS2687: All declarations of 'prototype' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(666,5): error TS2687: All declarations of 'prototype' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(680,5): error TS2687: All declarations of 'prototype' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(692,5): error TS2687: All declarations of 'value' must have identical modifiers.
node_modules/@types/core-js/index.d.ts(804,5): error TS2687: All declarations of 'prototype' must have identical modifiers.
node_modules/typescript/lib/lib.es2015.core.d.ts(17,14): error TS2300: Duplicate identifier 'PropertyKey'.
这是我的 tsconfig.json：
"compilerOptions":
"target": "es5",
"module": "system",
"moduleResolution": "node",
"lib": ["es2015", "dom"],
"sourceMap": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": true,
"outDir":"js/app/",
"typeRoots": [
"./node_modules/@types"
]
,
"exclude": [
"node_modules",
"app/test"
]
我的 package.json
"name": "vepo",
"version": "1.0.0",
"scripts":
"coverage": "istanbul cover ./test.js",
"lite-server-test": "lite-server --config=liteserver-test-config.json",
"test": "karma start karma.config.js",
"start": "tsc && concurrently \"npm run tsc:w\" \"npm run lite\" \"sass --watch app\" \"sass --watch index.scss\" \"sass --watch global-constants.scss\" ",
"lite": "lite-server",
"tsc": "tsc",
"tsc:w": "tsc -w"
,
"bin":
"e2e-test-start": "bin/e2e-test-start.js"
,
"license": "ISC",
"moduleResolution": "node",
"dependencies":
"@angular/common": "~2.2.0",
"@angular/compiler": "~2.2.0",
"@angular/core": "~2.2.0",
"@angular/forms": "~2.2.0",
"@angular/http": "~2.2.0",
"@angular/platform-browser": "~2.2.0",
"@angular/platform-browser-dynamic": "~2.2.0",
"@angular/router": "~3.2.0",
"@angular/upgrade": "~2.2.0",
"@types/bootstrap": "^3.3.32",
"@types/core-js": "^0.9.34",
"@types/google-maps": "^3.1.28",
"@types/jasmine": "^2.5.38",
"@types/jquery": "^2.0.34",
"@types/node": "^6.0.51",
"angular-in-memory-web-api": "~0.1.15",
"angular2-google-maps": "^0.15.0",
"angular2-modal": "^2.0.0",
"bootstrap": "^3.3.7",
"core-js": "^2.4.1",
"jquery": "v3.1.1",
"jshint": "^2.9.4",
"ng2-bs3-modal": "^0.10.4",
"ng2-popover": "0.0.9",
"protractor": "4.0.11",
"reflect-metadata": "^0.1.8",
"rxjs": "5.0.0-beta.12",
"systemjs": "0.19.39",
"tslint": "^4.0.2",
"zone.js": "^0.6.25"
,
"devDependencies":
"@types/google-maps": "^3.1.28",
"angular-mocks": "^1.5.8",
"codelyzer": "1.0.0-beta.0",
"concurrently": "^3.0.0",
"core-js": "^2.4.1",
"del": "latest",
"gulp": "^3.9.1",
"gulp-changed": "^1.3.2",
"gulp-concat": "^2.6.1",
"gulp-imagemin": "^3.1.1",
"gulp-jshint": "^2.0.4",
"gulp-minify-html": "^1.0.6",
"gulp-sass": "latest",
"gulp-sourcemaps": "latest",
"gulp-strip-debug": "^1.1.0",
"gulp-tslint": "latest",
"gulp-typescript": "latest",
"gulp-uglify": "^2.0.0",
"istanbul": "^0.4.5",
"jasmine": "~2.4.1",
"karma": "latest",
"karma-chrome-launcher": "latest",
"karma-cli": "^1.0.1",
"karma-coverage": "latest",
"karma-htmlfile-reporter": "^0.3.4",
"karma-jasmine": "latest",
"karma-jasmine-html-reporter": "^0.2.2",
"karma-mocha-reporter": "latest",
"karma-phantomjs2-launcher": "latest",
"karma-story-reporter": "latest",
"lite-server": "latest",
"path": "latest",
"phantomjs2": "latest",
"protractor-jasmine2-html-reporter": "0.0.6",
"require-dir": "latest",
"systemjs-builder": "latest",
"tslint": "latest",
"typescript": "latest"
我该如何解决这个问题？
**编辑：我曾经将typings 用于.d.ts 文件，但我转向@types。我还更新了我的 npm 和节点以尝试解决此问题：
app: '1.0.0',
npm: '3.10.8',
ares: '1.10.1-DEV',
http_parser: '2.7.0',
icu: '57.1',
modules: '48',
node: '5.something',
openssl: '1.0.2j',
uv: '1.9.1',
v8: '5.1.281.84',
zlib: '1.2.8'
到这里：
app: '1.0.0',
npm: '4.0.2',
ares: '1.10.1-DEV',
http_parser: '2.7.0',
icu: '57.1',
modules: '48',
node: '6.9.1',
openssl: '1.0.2j',
uv: '1.9.1',
v8: '5.1.281.84',
zlib: '1.2.8'
npm-debug.log：
0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'start' ]
2 info using npm@4.0.2
3 info using node@v6.9.1
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle vepo@1.0.0~prestart: vepo@1.0.0
6 silly lifecycle vepo@1.0.0~prestart: no script for prestart, continuing
7 info lifecycle vepo@1.0.0~start: vepo@1.0.0
8 verbose lifecycle vepo@1.0.0~start: unsafe-perm in lifecycle true
9 verbose lifecycle vepo@1.0.0~start: PATH: /usr/local/lib/node_modules/npm/bin/node-gyp-bin:/Users/Ben/Development/vepo/node_modules/.bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
10 verbose lifecycle vepo@1.0.0~start: CWD: /Users/Ben/Development/vepo
11 silly lifecycle vepo@1.0.0~start: Args: [ '-c',
11 silly lifecycle 'tsc && concurrently "npm run tsc:w" "npm run lite" "sass --watch app" "sass --watch index.scss" "sass --watch global-constants.scss" ' ]
12 silly lifecycle vepo@1.0.0~start: Returned: code: 2 signal: null
13 info lifecycle vepo@1.0.0~start: Failed to exec start script
14 verbose stack Error: vepo@1.0.0 start: `tsc && concurrently "npm run tsc:w" "npm run lite" "sass --watch app" "sass --watch index.scss" "sass --watch global-constants.scss" `
14 verbose stack Exit status 2
14 verbose stack at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:279:16)
14 verbose stack at emitTwo (events.js:106:13)
14 verbose stack at EventEmitter.emit (events.js:191:7)
14 verbose stack at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/spawn.js:40:14)
14 verbose stack at emitTwo (events.js:106:13)
14 verbose stack at ChildProcess.emit (events.js:191:7)
14 verbose stack at maybeClose (internal/child_process.js:877:16)
14 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
15 verbose pkgid vepo@1.0.0
16 verbose cwd /Users/Ben/Development/vepo
17 error Darwin 16.1.0
18 error argv "/usr/local/bin/node" "/usr/local/bin/npm" "start"
19 error node v6.9.1
20 error npm v4.0.2
21 error code ELIFECYCLE
22 error vepo@1.0.0 start: `tsc && concurrently "npm run tsc:w" "npm run lite" "sass --watch app" "sass --watch index.scss" "sass --watch global-constants.scss" `
22 error Exit status 2
23 error Failed at the vepo@1.0.0 start script 'tsc && concurrently "npm run tsc:w" "npm run lite" "sass --watch app" "sass --watch index.scss" "sass --watch global-constants.scss" '.
23 error Make sure you have the latest version of node.js and npm installed.
23 error If you do, this is most likely a problem with the vepo package,
23 error not with npm itself.
23 error Tell the author that this fails on your system:
23 error tsc && concurrently "npm run tsc:w" "npm run lite" "sass --watch app" "sass --watch index.scss" "sass --watch global-constants.scss"
23 error You can get information on how to open an issue for this project with:
23 error npm bugs vepo
23 error Or if that isn't available, you can get their info via:
23 error npm owner ls vepo
23 error There is likely additional logging output above.
24 verbose exit [ 1, true ]
【问题讨论】：
尽量不包括那些 core-js 声明。tsc 已经包含了它们，而且我认为 core-js 是旧的。查看这篇文章以了解类似的问题和解决方案 - ***.com/a/40802446/2038383。
@S.Pinkus 所以将“node_modules/@types/core-js”添加到excludes 的tsconfig.json 字段？我已经试过了。还是您的意思是从@types 中删除core-js 文件夹？
tsc 仍然可能会抓住它。它有一些非常奇怪的查找规则。尝试在 compilerOptions 中设置types: []。这是确保 tsc 不捡起它的最可靠方法。
@S.Pinkus 你让我走上了解决问题的道路。谢谢。
【参考方案1】：
将"@types/core-js": "0.9.34" 升级到版本0.9.39 对我有用。
【讨论】：
这是真正的答案。删除 @types/core-js 将不起作用，因为 Angular 依赖于它，但升级到 0.9.39 会让它像梦一样工作！ 首先我在打字稿中编辑：“@types/core-js”：“0.9.39”（甚至“^0.09.34”对我有用）。然后我在控制台中运行：npm install --save @types/core-js。谢谢！以上是关于错误 TS2300：node_modules/@types/core-js/index.d.ts 中的标识符“PropertyKey”重复的主要内容，如果未能解决你的问题，请参考以下文章
错误 TS2300：node_modules/@types/core-js/index.d.ts 中的标识符“PropertyKey”重复