EC
TS1227
TypeScriptERRORNotableSyntaxHIGH confidence

Parameter 'X' is not in the same position as parameter 'X'.

Production Risk

Build will fail; resolve before shipping.

What this means

A syntax error (TS1227): Parameter 'X' is not in the same position as parameter 'X'.. This diagnostic is emitted by the TypeScript compiler when parameter 'X' is not in the same position as parameter 'X'..

Why it happens
  1. 1Incorrect TypeScript syntax or type usage
  2. 2Type mismatch between declared and actual value
How to reproduce

TypeScript compiler reports TS1227 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS1227
// Parameter 'X' is not in the same position as parameter 'X'.

expected output

error TS1227: Parameter 'X' is not in the same position as parameter 'X'.

Fix

Address the TypeScript diagnostic

WHEN When this error is reported by the compiler

Address the TypeScript diagnostic
// Run the TypeScript compiler for details:
npx tsc --noEmit
// Use the TypeScript playground to test your code:
// https://www.typescriptlang.org/play

Why this works

Review the full error message and location; the TypeScript handbook provides guidance on each error category.

Sources
Official documentation ↗

TypeScript Compiler Diagnostics

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