Add plugin support for Prettier

Author: andres-rojas

src/prettier/README.md

@@ -16,5 +16,6 @@ Prettier is an opinionated code formatter.
 | Options Id | Description | Type | Default Value |
 |-----|-----|-----|-----|
 | version | Select the version to install. | string | latest |
+| plugins | Comma-separated list of prettier plugins to install. | string | |
 
 

src/prettier/devcontainer-feature.json

@@ -1,6 +1,6 @@
 {
     "id": "prettier",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "Prettier (via npm)",
     "documentationURL": "http://github.com/devcontainers-contrib/features/tree/main/src/prettier",
     "description": "Prettier is an opinionated code formatter.",
@@ -12,6 +12,11 @@
                 "latest"
             ],
             "type": "string"
+        },
+        "plugins": {
+            "default": "",
+            "description": "Comma-separated list of prettier plugins to install.",
+            "type": "string"
         }
     },
     "installsAfter": [

src/prettier/install.sh

@@ -19,6 +19,36 @@ $nanolayer_location \
     --option package='prettier' --option version="$VERSION"
 
 
+PRETTIER_PLUGINS=${PLUGINS:-""}
+
+setup_npm() {
+    export NVM_DIR=/usr/local/share/nvm
+    [ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"
+}
+
+install_prettier_plugin() {
+    echo "Installing prettier plugin - $1"
+    if ! npm list $1 >/dev/null; then
+        npm install --save-dev prettier $1
+    fi
+}
+
+# Prettier plugins are expected to be installed locally, not globally
+# In particular, VSCode + extensions tend to have issues with this
+if [ -n "${PRETTIER_PLUGINS}" ]; then
+    if ! type npm >/dev/null 2>&1; then
+        setup_npm
+    fi
+
+    OIFS=$IFS
+    IFS=','
+    for plugin in $PRETTIER_PLUGINS; do
+        install_prettier_plugin $plugin
+    done
+    IFS=$OIFS
+fi
+
+
 
 echo 'Done!'
 

test/prettier/plugin.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -e
+
+source dev-container-features-test-lib
+
+check "npm list --parseable --depth 0  | grep prettier-plugin-ini" npm list --parseable --depth 0 | grep "prettier-plugin-ini"
+
+reportResults

test/prettier/scenarios.json

@@ -4,5 +4,14 @@
         "features": {
             "prettier": {}
         }
+    },
+    "plugin": {
+        "image": "mcr.microsoft.com/devcontainers/base:debian",
+        "features": {
+            "prettier": {
+                "version": "latest",
+                "plugins": "prettier-plugin-ini"
+            }
+        }
     }
 }