EC
TS6710
TypeScriptERRORNotableConfigHIGH confidence

Specify multiple folders that act like './node_modules/@types'.

Production Risk

Build will fail; resolve before shipping.

What this means

A compiler configuration error (TS6710): Specify multiple folders that act like './node_modules/@types'.. This diagnostic is emitted by the TypeScript compiler when specify multiple folders that act like './node_modules/@types'..

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

TypeScript compiler reports TS6710 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS6710
// Specify multiple folders that act like './node_modules/@types'.

expected output

error TS6710: Specify multiple folders that act like './node_modules/@types'.

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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