unrecognized compiler flag 'noImplicitOverride'

Encountering an issue in my Angular 13 app with Typescript 4.5.2. The tsconfig.json file is causing trouble as setting "noImplicitOverride" to true results in an error message saying 'Unknown compiler option 'noImplicitOverride'.ts' even when switched to false.

{
"baseUrl": "./",
"outDir": "./dist/out-tsc",
"forceConsistentCasingInFileNames": true,
"strict": true,
"noImplicitOverride": true ,
"noPropertyAccessFromIndexSignature": true,
"noImplicitReturns": true,
"noFallthroughCasesInSwitch": true,
"sourceMap": true,
"declaration": false,
"downlevelIteration": true,
"experimentalDecorators": true,
"moduleResolution": "node",
"importHelpers": true,
"target": "es2017",
"module": "es2020",
"lib": [
  "es2020",
  "dom"
]
angulartypescriptcompiler-errorstsconfig

Answer №1

After encountering the issue, I resolved it by adding the NuGet package Microsoft.TypeScript.MSBuild to my Visual Studio project.

Answer №2

Encountered a similar problem myself. Reverting back to Typescript version 4.4.2 resolved the issue for me.

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