EC
TS6278
TypeScriptERRORNotableConfigHIGH confidence

There are types at 'X', but this result could not be resolved when respecting...

Production Risk

Build will fail; resolve before shipping.

What this means

A compiler configuration error (TS6278): There are types at 'X', but this result could not be resolved when respecting package.json "exports". The 'X' library may need to update its package.json or typings.. This diagnostic is emitted by the TypeScript compiler when there are types at 'X', but this result could not be resolved when respecting package.json "exports". The 'X' library may need to update its package.json or typings..

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

TypeScript compiler reports TS6278 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS6278
// There are types at 'X', but this result could not be resolved when respecting package.json "exports". The 'X' library may need to update its package.json or typings.

expected output

error TS6278: There are types at 'X', but this result could not be resolved when respecting package.json "exports". The 'X' library may need to update its package.json or typings.

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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