Although optional chaining is implemented, the object may still be considered 'null'

Even with optional chaining and TypeScript 4.6.3, I keep encountering the error message

Object is possibly 'null'. ts(2531)
.

const path = fileInput?.files[0]?.path

My tsconfig.json configuration is as follows:

{
  "compilerOptions": {
    "target": "esnext",
    "useDefineForClassFields": true,
    "module": "esnext",
    "moduleResolution": "node",
    "strict": true,
    "jsx": "preserve",
    "sourceMap": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "esModuleInterop": true,
    "lib": ["esnext", "dom"]
  },
  "include": ["src/**/*.ts", "src/**/*.d.ts", "src/**/*.tsx", "src/**/*.vue"],
  "references": [{ "path": "./tsconfig.node.json" }]
}

What could be causing this issue?

Answer №1

Opt for optional chaining when accessing array indexes.

let filePath = inputFile?.data?.[0]?.filePath

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