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TypeScript & Node.js · Developer Error Resolution Lab

Fix 'npm ERR! code ELIFECYCLE' and 'npm ERR! errno 1' (Script Exited With Status 1)

ELIFECYCLE is a wrapper error: find the real failure above it, then clear caches, reinstall dependencies, or fix the failing script.

Triggered Error Message:

npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! my-app@1.0.0 build: `next build` npm ERR! Exit status 1

Customize Solution for Your Environment
# 1. Capture the full output of the failing script
npm run build --verbose 2>&1 | tee build.log

# 2. Look for the first real error (TS errors, missing env vars, OOM)
grep -n -i -E "error|cannot|not found|heap" build.log | head -20

# 3. Clean reinstall
rm -rf node_modules package-lock.json && npm install

# 4. Out of memory during build?
NODE_OPTIONS="--max-old-space-size=4096" npm run build

Root Cause & Mechanism Analysis

Why does this error occur?

npm only reports that a package.json script (build, start, postinstall) exited with a non-zero code. The real cause — a TypeScript error, missing environment variable, out-of-memory crash, or corrupted node_modules — is printed in the lines above the npm ERR! block.

Frequently Asked Questions

Is ELIFECYCLE an npm bug?
No. It just forwards the exit code of your script. Fix the error printed before it and ELIFECYCLE disappears.
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