[英]TypeScript error "TS2354: This syntax requires an imported helper but module 'tslib' cannot be found"
I have reduced a problem with TypeScript to the following example.我已将 TypeScript 的问题简化为以下示例。 When trying to run tsc, I get the following error message but
tslib
should be available.尝试运行 tsc 时,我收到以下错误消息,但
tslib
应该可用。
https://codesandbox.io/s/quizzical-mclean-n9vvi?fontsize=14&hidenavigation=1&theme=dark https://codesandbox.io/s/quizzical-mclean-n9vvi?fontsize=14&hidenavigation=1&theme=dark
$ tsc --noEmit --project ./tsconfig.json
index.js:3:8 - error TS2354: This syntax requires an imported helper but module 'tslib' cannot be found.
3 const {ArgumentParser} = require('argparse');
~~~~~~~~~~~~~~
Found 1 error.
package.json package.json
{
"name": "test",
"version": "1.0.0",
"description": "",
"main": "index.ts",
"scripts": {
"test": "tsc --noEmit --project ./tsconfig.json"
},
"author": "",
"license": "ISC",
"devDependencies": {
"@types/argparse": "1.0.38",
"argparse": "1.0.10",
"tslib": "1.11.1",
"typescript": "3.8.3"
}
}
tsconfig.json tsconfig.json
{
"compilerOptions": {
"checkJs": true,
"allowJs": true,
"moduleResolution": "node",
"target": "es2018",
"module": "commonjs",
"importHelpers": true,
"lib": [
"es2018"
]
},
"include": [
"*.js"
],
"exclude": [
"node_modules"
]
}
index.js索引.js
'use strict';
const {ArgumentParser} = require('argparse');
The issue has now been confirmed as a bug in TypeScript https://github.com/microsoft/TypeScript/issues/37991该问题现已确认为 TypeScript https://github.com/microsoft/TypeScript/issues/37991中的错误
I think you need to install "tslib" using the following command.我认为您需要使用以下命令安装“tslib”。
npm i -g tslib
I Resolve this issue by using below copy-anything
npm command我通过使用下面
copy-anything
npm 命令解决了这个问题
npm i copy-anything
The answer to this question error TS2307: Cannot find module '@angular/core' , which is这个问题error TS2307: Cannot find module '@angular/core'的答案是
npm install --save @angular/material @angular/cdk
rm -rf node_modules
npm install
solved my issue.解决了我的问题。
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