EC
TS90054
TypeScriptERRORNotableConfigHIGH confidence

Includes imports of types referenced by 'X'

Production Risk

Build will fail; resolve before shipping.

What this means

A TypeScript diagnostic (TS90054): Includes imports of types referenced by 'X'. This diagnostic is emitted by the TypeScript compiler when includes imports of types referenced by '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 TS90054 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS90054
// Includes imports of types referenced by 'X'

expected output

error TS90054: Includes imports of types referenced by '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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