updated nvm.sh to use darwin-x64 for all binary on mac where node version < 16.0.0

Author: Rahulbeniwal26119

nvm.sh

@@ -2360,12 +2360,9 @@ nvm_get_download_slug() {
     fi
   fi
 
-  # If running MAC M1 :: Node v14.17.0 was the first version to offer official experimental support:
-  # https://github.com/nodejs/node/issues/40126 (although binary distributions aren't available until v16)
-  if \
-    nvm_version_greater '14.17.0' "${VERSION}" \
-    || (nvm_version_greater_than_or_equal_to "${VERSION}" '15.0.0' && nvm_version_greater '16.0.0' "${VERSION}") \
-  ; then
+  # If running MAC M1 :: ARM64 binaries are not available for Node < 16.0.0
+  # https://github.com/nodejs/node/issues/40126 (binary distributions aren't available until v16)
+  if nvm_version_greater '16.0.0' "${VERSION}"; then
     if [ "_${NVM_OS}" = '_darwin' ] && [ "${NVM_ARCH}" = 'arm64' ]; then
       NVM_ARCH=x64
     fi

test/fast/Unit tests/nvm_get_download_slug

@@ -109,3 +109,26 @@ ACTUAL="$(nvm_get_download_slug iojs source 15.99.99)"
 EXPECTED="iojs-15.99.99"
 [ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"
 
+
+REAL_OS="$(command uname -s 2>/dev/null || echo '')"
+REAL_ARCH="$(command uname -m 2>/dev/null || echo '')"
+if [ "${REAL_OS}" = "Darwin" ] && [ "${REAL_ARCH}" = "arm64" ]; then
+  # Node < 16 uses x64 on darwin-arm64
+  ACTUAL="$(nvm_get_download_slug node binary 14.21.3)"
+  EXPECTED='node-14.21.3-darwin-x64'
+  [ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"
+  ACTUAL="$(nvm_get_download_slug node binary 15.99.99)"
+  EXPECTED='node-15.99.99-darwin-x64'
+  [ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"
+  ACTUAL="$(nvm_get_download_slug iojs binary 15.99.99)"
+  EXPECTED='iojs-15.99.99-darwin-x64'
+  [ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"
+
+  # Test Node >= 16 uses arm64 on darwin-arm64
+  ACTUAL="$(nvm_get_download_slug node binary 16.0.0)"
+  EXPECTED='node-16.0.0-darwin-arm64'
+  [ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"
+  ACTUAL="$(nvm_get_download_slug node binary 18.0.0)"
+  EXPECTED='node-18.0.0-darwin-arm64'
+  [ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"
+fi