EC
TS5009
TypeScriptERRORNotableConfigHIGH confidence

Cannot find the common subdirectory path for the input files.

Production Risk

Build will fail; resolve before shipping.

What this means

A compiler configuration error (TS5009): Cannot find the common subdirectory path for the input files.. This diagnostic is emitted by the TypeScript compiler when cannot find the common subdirectory path for the input files..

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

TypeScript compiler reports TS5009 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS5009
// Cannot find the common subdirectory path for the input files.

expected output

error TS5009: Cannot find the common subdirectory path for the input files.

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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