EC
TS6140
TypeScriptERRORNotableConfigHIGH confidence

Auto discovery for typings is enabled in project 'X'. Running extra resolutio...

Production Risk

Build will fail; resolve before shipping.

What this means

A compiler configuration error (TS6140): Auto discovery for typings is enabled in project 'X'. Running extra resolution pass for module 'X' using cache location 'X'.. This diagnostic is emitted by the TypeScript compiler when auto discovery for typings is enabled in project 'X'. Running extra resolution pass for module 'X' using cache location '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 TS6140 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS6140
// Auto discovery for typings is enabled in project 'X'. Running extra resolution pass for module 'X' using cache location 'X'.

expected output

error TS6140: Auto discovery for typings is enabled in project 'X'. Running extra resolution pass for module 'X' using cache location 'X'.

Fix

Fix the tsconfig.json option

WHEN When a compiler option is invalid or missing

Fix the tsconfig.json option
// tsconfig.json
{
  "compilerOptions": {
    // Review and correct the flagged option
  }
}
// Run: npx tsc --showConfig to see effective config

Why this works

TypeScript validates tsconfig.json options; check the official tsconfig reference for valid values.

Sources
Official documentation ↗

TypeScript Compiler Diagnostics

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