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[Fix] nvm exec/nvm run: warn when no version and no .nvmrc

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Currently these commands silently fall back to the active node version when neither a version argument nor an `.nvmrc` resolves,
making them invisibly dependent on shell state and impossible to script predictably (see #3755).

Print a stderr deprecation warning in this case (suppressed by `--silent`) and continue with the active node version,
so existing callers keep working.
The follow-up change will turn this into a hard error;
pass `current` explicitly (e.g. `nvm exec current node ...`) to silence the warning and lock in the new behavior now.

Refs #3755
This commit is contained in:
Jordan Harband
2026-05-05 18:10:53 -07:00
parent 7079a5d61c
commit a9933f77a6
2 changed files with 88 additions and 0 deletions
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25
nvm.sh
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@@ -4179,6 +4179,14 @@ nvm() {
if [ $has_checked_nvmrc -ne 1 ]; then
{ NVM_RC_VERSION="$(NVM_SILENT="${NVM_SILENT:-0}" nvm_rc_version 3>&1 1>&4)"; } 4>&1 && has_checked_nvmrc=1
fi
if [ -z "${NVM_RC_VERSION-}" ]; then
if [ "${NVM_SILENT:-0}" -ne 1 ]; then
nvm_err 'WARNING: `nvm run` was invoked without a version argument and without an .nvmrc file.'
nvm_err ' Falling back to the active node version; this will become an error in a future release.'
nvm_err ' Pass `current` explicitly (e.g. `nvm run current ...`) to silence this warning.'
fi
NVM_RC_VERSION="$(nvm_version current)" ||:
fi
provided_version="${NVM_RC_VERSION}"
IS_VERSION_FROM_NVMRC=1
VERSION="$(nvm_version "${NVM_RC_VERSION}")" ||:
@@ -4236,19 +4244,36 @@ nvm() {
local provided_version
provided_version="$1"
local VERSION_SOURCE
VERSION_SOURCE=''
if [ "${NVM_LTS-}" != '' ]; then
provided_version="lts/${NVM_LTS:-*}"
VERSION="${provided_version}"
VERSION_SOURCE='lts'
elif [ -n "${provided_version}" ]; then
VERSION="$(nvm_version "${provided_version}")" ||:
if [ "_${VERSION}" = '_N/A' ] && ! nvm_is_valid_version "${provided_version}"; then
{ provided_version="$(NVM_SILENT="${NVM_SILENT:-0}" nvm_rc_version 3>&1 1>&4)"; } 4>&1 && has_checked_nvmrc=1
VERSION="$(nvm_version "${provided_version}")" ||:
if [ -n "${provided_version}" ]; then
VERSION_SOURCE='nvmrc'
fi
else
VERSION_SOURCE='arg'
shift
fi
fi
if [ -z "${VERSION_SOURCE}" ]; then
if [ "${NVM_SILENT:-0}" -ne 1 ]; then
nvm_err 'WARNING: `nvm exec` was invoked without a version argument and without an .nvmrc file.'
nvm_err ' Falling back to the active node version; this will become an error in a future release.'
nvm_err ' Pass `current` explicitly (e.g. `nvm exec current ...`) to silence this warning.'
fi
provided_version='current'
VERSION="$(nvm_version current)" ||:
fi
nvm_ensure_version_installed "${provided_version}"
EXIT_CODE=$?
if [ "${EXIT_CODE}" != "0" ]; then