[readme] remove avn from readme

`avn` is archived ([see repo](https://github.com/direnv/direnv)) and should probably no longer be recommended by nvm.

This also adds a solution using `direnv` and proposes a possible `.envrc` to use.
See [wbyoung/avn#109](https://github.com/wbyoung/avn/issues/109#issuecomment-1281865585) for more suggested `.envrc` files.

.github/workflows/latest-npm.yml

@@ -37,6 +37,11 @@ jobs:
       matrix:
         node-version: ${{ fromJson(needs.matrix.outputs.latest) }}
         include:
+          - node-version: "21"
+          - node-version: "20.5"
+          - node-version: "20.4"
+          - node-version: "14.17"
+          - node-version: "14.16"
           - node-version: "9.2"
           - node-version: "9.1"
           - node-version: "9.0"

.github/workflows/toc.yml

@@ -20,6 +20,7 @@ jobs:
         allowed-endpoints:
           github.com:443
           registry.npmjs.org:443
+          api.github.com:443
     - uses: actions/checkout@v4
       with:
         # https://github.com/actions/checkout/issues/217#issue-599945005
@@ -30,7 +31,7 @@ jobs:
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
     - uses: actions/setup-node@v4
       with:
-        node-version: '16'
+        node-version: 'lts/*'
     - run: npm install
     - run: npm run doctoc
     - name: commit changes

README.md

@@ -207,7 +207,7 @@ If you're running a system without prepackaged binary available, which means you
   - [bass](https://github.com/edc/bass) allows you to use utilities written for Bash in fish shell
   - [fast-nvm-fish](https://github.com/brigand/fast-nvm-fish) only works with version numbers (not aliases) but doesn't significantly slow your shell startup
   - [plugin-nvm](https://github.com/derekstavis/plugin-nvm) plugin for [Oh My Fish](https://github.com/oh-my-fish/oh-my-fish), which makes nvm and its completions available in fish shell
-  - [fnm](https://github.com/fisherman/fnm) - [fisherman](https://github.com/fisherman/fisherman)-based version manager for fish
+  - [nvm.fish](https://github.com/jorgebucaran/nvm.fish) - The Node.js version manager you'll adore, crafted just for Fish
   - [fish-nvm](https://github.com/FabioAntunes/fish-nvm) - Wrapper around nvm for fish, delays sourcing nvm until it's actually used.
 
 **Note:** We still have some problems with FreeBSD, because there is no official pre-built binary for FreeBSD, and building from source may need [patches](https://www.freshports.org/www/node/files/patch-deps_v8_src_base_platform_platform-posix.cc); see the issue ticket:

nvm.sh

@@ -354,6 +354,21 @@ nvm_install_latest_npm() {
     if [ $NVM_IS_19_OR_ABOVE -eq 1 ] && nvm_version_greater_than_or_equal_to "${NODE_VERSION}" 20.5.0; then
       NVM_IS_20_5_OR_ABOVE=1
     fi
+    local NVM_IS_20_17_or_ABOVE
+    NVM_IS_20_17_or_ABOVE=0
+    if [ $NVM_IS_20_5_OR_ABOVE -eq 1 ] && nvm_version_greater 20.17.0 "${NODE_VERSION}"; then
+      NVM_IS_20_17_or_ABOVE=1
+    fi
+    local NVM_IS_21_OR_ABOVE
+    NVM_IS_21_OR_ABOVE=0
+    if [ $NVM_IS_20_17_or_ABOVE -eq 1 ] && nvm_version_greater 21.0.0 "${NODE_VERSION}"; then
+      NVM_IS_21_OR_ABOVE=1
+    fi
+    local NVM_IS_22_9_OR_ABOVE
+    NVM_IS_22_9_OR_ABOVE=0
+    if [ $NVM_IS_21_OR_ABOVE -eq 1 ] && nvm_version_greater 22.9.0 "${NODE_VERSION}"; then
+      NVM_IS_22_9_OR_ABOVE=1
+    fi
 
     if [ $NVM_IS_4_4_OR_BELOW -eq 1 ] || {
       [ $NVM_IS_5_OR_ABOVE -eq 1 ] && nvm_version_greater 5.10.0 "${NODE_VERSION}"; \
@@ -399,8 +414,15 @@ nvm_install_latest_npm() {
       [ $NVM_IS_18_17_OR_ABOVE -eq 0 ] \
       || { [ $NVM_IS_19_OR_ABOVE -eq 1 ] && [ $NVM_IS_20_5_OR_ABOVE -eq 0 ]; } \
     ; then
+      # TODO: 10.8.3 can run on 16.20.2?? https://github.com/nodejs/Release/issues/884#issuecomment-2558077691
       nvm_echo '* `npm` `v9.x` is the last version that works on `node` `< v18.17`, `v19`, or `v20.0` - `v20.4`'
       $NVM_NPM_CMD install -g npm@9
+    elif \
+      [ $NVM_IS_20_17_or_ABOVE -eq 0 ] \
+      || { [ $NVM_IS_21_OR_ABOVE -eq 1 ] && [ $NVM_IS_22_9_OR_ABOVE -eq 0 ]; } \
+    ; then
+      nvm_echo '* `npm` `v10.x` is the last version that works on `node` `< v20.17`, `v21`, or `v22.0` - `v22.8`'
+      $NVM_NPM_CMD install -g npm@10
     else
       nvm_echo '* Installing latest `npm`; if this does not work on your node version, please report a bug!'
       $NVM_NPM_CMD install -g npm
@@ -422,8 +444,7 @@ fi
 if [ -z "${NVM_DIR-}" ]; then
   # shellcheck disable=SC2128
   if [ -n "${BASH_SOURCE-}" ]; then
-    # shellcheck disable=SC2169,SC3054
-    NVM_SCRIPT_SOURCE="${BASH_SOURCE[0]}"
+    NVM_SCRIPT_SOURCE="${BASH_SOURCE}"
   fi
   # shellcheck disable=SC2086
   NVM_DIR="$(nvm_cd ${NVM_CD_FLAGS} "$(dirname "${NVM_SCRIPT_SOURCE:-$0}")" >/dev/null && \pwd)"