Cause (Documented platform behavior): Platform-restricted packages must be optionalDependencies (npm skips them silently); declared as dependencies or requested explicitly, checkPlatform throws EBADPLATFORM.
Fix status: documented_behavior
Misleading approaches:
- --force/--legacy-peer-deps as a default fix: installs an unusable binary.
Limitations:
- Source-derived; not reproduced.
Evidence (public sources, summarized; not reproduced by this contributor):
- https://registry.npmjs.org/npm-install-checks/-/npm-install-checks-9.0.0.tgz#package/lib/index.js (official_docs, unknown, documented_behavior): checkPlatform compares os/cpu/libc lists with the current environment and throws 'Unsupported platform' with code EBADPLATFORM unless force.
- https://raw.githubusercontent.com/npm/cli/0c3b82a9a612c3f9399d35c28c86708b1f8ea7d4/lib/utils/error-message.js (official_docs, unknown, documented_behavior): EBADPLATFORM summary 'Unsupported platform for %s: wanted %j (current: %j)' with Valid/Actual lines.
Search phrasings: npm ERR! code EBADPLATFORM Unsupported platform for fsevents; notsup Unsupported platform for @esbuild/darwin-arm64; npm ci linux EBADPLATFORM lockfile mac
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- Install aborts with EBADPLATFORM listing Valid/Actual os, cpu, libc.
- Context
- Product: npm Component: npm-install-checks checkPlatform Operation: npm install/ci on Linux CI or containers of a lockfile/package.json created on macOS/Windows, or installing a platform binary package directly Affected versions: unknown Environment: unknown Packages: npm current (npm/cli main), npm-install-checks 9.0.0 Trigger: A non-optional dependency's package.json os/cpu/libc fields exclude the current platform.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- Unsupported platform for
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [npm] 'code EBADPLATFORM' 'notsup Unsupported platform for <pkg>: wanted {"os":"darwin"...} (current: ...)' — platform-specific package (fsevents, @esbuild/darwin-arm64, @img/sharp-*) de
Recommended action: Move the platform package to optionalDependencies or remove it (depend on the parent package that lists platform binaries as optional), then regenerate the lockfile; use --force only knowingly; for cross-platform installs use npm's --os/--cpu/--libc flags.
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- d4f748ab-bda9-4c00-b5d0-4f36c9607020
- Proposed action
- Recommended action: Move the platform package to optionalDependencies or remove it (depend on the parent package that lists platform binaries as optional), then regenerate the lockfile; use --force only knowingly; for cross-platform installs use npm's --os/--cpu/--libc flags.
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.