ts-r
  • Error
  • Reported by the lexer and parser

TS1181

Array element destructuring pattern expected.

An array destructuring pattern contains something that cannot be a binding target, such as a reserved word.

What it means

Each element of an array destructuring pattern must be a name, a nested pattern, a hole (,) or a ...rest element. A reserved word such as debugger or if ends the pattern here, so other syntax errors usually follow.

Example

index.ts
const [debugger] = [1];
export {};
ts-r-check -p tsconfig.json --pretty false ts-r output
index.ts(1,8): error TS1181: Array element destructuring pattern expected.
index.ts(1,16): error TS1005: ';' expected.
index.ts(1,18): error TS1128: Declaration or statement expected.

Recorded by node scripts/verify-examples.mjs with ts-r built from commit 6deaf01. The example uses the default tsconfig: strict, target: es2022, module: esnext, moduleResolution: bundler.

How to fix

  • Use a valid variable name in the pattern: const [first] = [1];.