EC
TS1295
TypeScriptERRORNotableSyntaxHIGH confidence

ECMAScript imports and exports cannot be written in a CommonJS file under 've...

Production Risk

Build will fail; resolve before shipping.

What this means

A syntax error (TS1295): ECMAScript imports and exports cannot be written in a CommonJS file under 'verbatimModuleSyntax'. Adjust the 'type' field in the nearest 'package.json' to make this file an ECMAScript module, or adjust your 'verbatimModuleSyntax', 'module', and 'moduleResolution' settings in TypeScript.. This diagnostic is emitted by the TypeScript compiler when eCMAScript imports and exports cannot be written in a CommonJS file under 'verbatimModuleSyntax'. Adjust the 'type' field in the nearest 'package.json' to make this file an ECMAScript module, or adjust your 'verbatimModuleSyntax', 'module', and 'moduleResolution' settings in TypeScript..

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

TypeScript compiler reports TS1295 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS1295
// ECMAScript imports and exports cannot be written in a CommonJS file under 'verbatimModuleSyntax'. Adjust the 'type' field in the nearest 'package.json' to make this file an ECMAScript module, or adjust your 'verbatimModuleSyntax', 'module', and 'moduleResolution' settings in TypeScript.

expected output

error TS1295: ECMAScript imports and exports cannot be written in a CommonJS file under 'verbatimModuleSyntax'. Adjust the 'type' field in the nearest 'package.json' to make this file an ECMAScript module, or adjust your 'verbatimModuleSyntax', 'module', and 'moduleResolution' settings in TypeScript.

Fix

Address the TypeScript diagnostic

WHEN When this error is reported by the compiler

Address the TypeScript diagnostic
// Run the TypeScript compiler for details:
npx tsc --noEmit
// Use the TypeScript playground to test your code:
// https://www.typescriptlang.org/play

Why this works

Review the full error message and location; the TypeScript handbook provides guidance on each error category.

Sources
Official documentation ↗

TypeScript Compiler Diagnostics

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