Typescript error TS5055 when importing js file into ts

Question

I want to mix .js and .ts files in the same project, but there is an error (TS5055) that i want to fix, which appears when the project is compiled with tsc, although the output is fine.

here is a tsconfig.json

{
    "compilerOptions": {
        "target": "es2022",
        "module": "ES2022",
        "allowJs": true,
        "lib": [
            "es2022",
            "DOM"
        ],
        "removeComments": true
    },
    "files": [
        "./index.ts"
    ]
}

and here is example ts file:

import { lib } from "./lib/impotr.js"

console.log(["imported", lib.hello("friend")]);

typescript compiler gives this error:

PS D:\WHY> tsc -p .
error TS5055: Cannot write file 'D:/WHY/lib/impotr.js' \
because it would overwrite input file.

How to fix it in tsconfig?

full example img

Answer 1

It seems you didn't specify an outDir . Take a look at this :

{
    "compilerOptions": {
        "target": "es2022",
        "module": "ES2022",
        "allowJs": true,
        "outDir": "build",
        "lib": [
            "es2022",
            "DOM"
        ],
        "removeComments": true
    },
    "files": [
        "./index.ts"
    ]
}

If the error is still present after this, it is recommended to set allowJs to false