A labeled tuple element is declared as rest with a '...' before the name, rat...
Production Risk
Build will fail; resolve before shipping.
A compiler configuration error (TS5087): A labeled tuple element is declared as rest with a '...' before the name, rather than before the type.. This diagnostic is emitted by the TypeScript compiler when a labeled tuple element is declared as rest with a '...' before the name, rather than before the type..
- 1Incorrect TypeScript syntax or type usage
- 2Type mismatch between declared and actual value
TypeScript compiler reports TS5087 during type checking.
// Triggers TS5087 // A labeled tuple element is declared as rest with a '...' before the name, rather than before the type.
expected output
error TS5087: A labeled tuple element is declared as rest with a '...' before the name, rather than before the type.
Fix
Fix the tsconfig.json option
WHEN When a compiler option is invalid or missing
// tsconfig.json
{
"compilerOptions": {
// Review and correct the flagged option
}
}
// Run: npx tsc --showConfig to see effective configWhy this works
TypeScript validates tsconfig.json options; check the official tsconfig reference for valid values.
TypeScript Compiler Diagnostics
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