尝试在NX repo(typescript/angular)中使用jsdom和Jest,我得到的问题是TextEncoder
和TextDecoder
不存在。无论我将jest testEnvironment
设置为'jsdom'
还是'node'
,以及节点版本从10到16,我都得到相同的结果)
因此,根据其他人发布的解决方案(谢谢!),我将它们导入到我的test-setup.ts
from node中,并将它们设置在node全局对象上:
import 'jest-preset-angular/setup-jest'
import { TextEncoder, TextDecoder } from 'util';
global.TextEncoder = TextEncoder;
global.TextDecoder = TextDecoder;
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这似乎适用于TextEncoder
,但不适用于TextDecoder
:
libs/xplat/features/test-setup.ts:10:1 - error TS2322: Type 'typeof TextDecoder' is not assignable to type '{ new (label?: string | undefined, options?: TextDecoderOptions | undefined): TextDecoder; prototype: TextDecoder; }'.
The types of 'prototype.decode' are incompatible between these types.
Type '(input?: ArrayBufferView | ArrayBuffer | null | undefined, options?: { stream?: boolean | undefined; } | undefined) => string' is not assignable to type '(input?: BufferSource | undefined, options?: TextDecodeOptions | undefined) => string'.
Types of parameters 'input' and 'input' are incompatible.
Type 'BufferSource | undefined' is not assignable to type 'ArrayBufferView | ArrayBuffer | null | undefined'.
Type 'ArrayBufferView' is not assignable to type 'ArrayBufferView | ArrayBuffer | null | undefined'.
Type 'ArrayBufferView' is missing the following properties from type 'DataView': getFloat32, getFloat64, getInt8, getInt16, and 17 more.
10 global.TextDecoder = TextDecoder;
型
有没有一个不同的TextDecoder
我应该使用-特别是,有没有一个以某种方式捆绑了jest的jsdom,我只是不知道如何使用?
如果有帮助,这里有一些版本(来自我最新的package.json
):
"devDependencies": {
"@angular-devkit/architect": "^0.1301.2",
"@angular-devkit/build-angular": "<=13.0.2",
...
"@nrwl/angular": "13.4.6",
"@nrwl/cli": "13.4.6",
...
"@nrwl/jest": "13.4.6",
...
"@types/core-js": "^2.5.5",
"@types/jest": "^27.0.2",
"@types/jsdom": "^16.2.14",
"@types/node": "14.14.33",
"@types/whatwg-url": "^8.2.1",
"@typescript-eslint/eslint-plugin": "~5.3.0",
"@typescript-eslint/parser": "~5.3.0",
...
"jest": "27.2.3",
"jest-jasmine2": "^27.4.6",
"jest-preset-angular": "11.0.0",
"jsdom": "^19.0.0",
"ng-mocks": "^12.5.1",
...
"ts-jest": "27.0.5",
"typescript": "~4.4.3",
"util": "^0.12.4",
"whatwg-url": "^11.0.0"
},
型
2条答案
按热度按时间yizd12fk1#
我设法摆脱了错误,首先强制全局对象为任何,然后分配TextDecoder:
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我知道这不是实现预期目标的最佳方式,通常会被认为是不好的做法,但是,因为这只是为了Jest的测试,我认为这应该是好的。
ohtdti5x2#
我可以通过这样做来解决它:
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我认为问题来自TextDecoder是一个全局Typescript类型,因此我们需要使用另一个名称。我Assert节点TextDecoder到TypeScript TextDecoder,我不确定这是否正确,但我认为它比任何都更安全。