feat: unstableNetlifyFunctionsSupport.includeDirs configuration

Author: lindsaylevine

index.js

@@ -4,9 +4,11 @@ const util = require('util')
 const makeDir = require('make-dir')
 const findUp = require('find-up')
 const nextOnNetlify = require('./src/index.js')
+const AdmZip = require('adm-zip')
 
 const validateNextUsage = require('./helpers/validateNextUsage')
 const doesNotNeedPlugin = require('./helpers/doesNotNeedPlugin')
+const getNextConfig = require('./helpers/getNextConfig')
 
 const pWriteFile = util.promisify(fs.writeFile)
 
@@ -58,6 +60,32 @@ module.exports = {
 
     await nextOnNetlify({ functionsDir: FUNCTIONS_SRC, publishDir: PUBLISH_DIR })
   },
+  async onPostBuild({ netlifyConfig, packageJson, constants: { FUNCTIONS_DIST }, utils }) {
+    if (await doesNotNeedPlugin({ netlifyConfig, packageJson, utils })) {
+      return
+    }
+
+    const nextConfig = await getNextConfig(utils.failBuild)
+    const getNetlifyFunctionName = require('./src/lib/helpers/getNetlifyFunctionName')
+
+    // any functions defined in the config need special handling
+    for (const name in nextConfig.unstableNetlifyFunctionsSupport || {}) {
+      const includeDirs = nextConfig.unstableNetlifyFunctionsSupport[name].includeDirs || []
+      console.log('Processing included dirs for ', name)
+
+      const zipName = path.join(FUNCTIONS_DIST, getNetlifyFunctionName(name) + '.zip')
+      const zip = new AdmZip(zipName)
+      includeDirs.forEach((includes) => {
+        if (fs.lstatSync(includes).isDirectory()) {
+          // we add the files at the root of the ZIP because process.cwd()
+          // points to `/` in serverless functions
+          zip.addLocalFolder(includes, includes)
+          console.log(`Added ${includes} to ${zipName}`)
+        }
+      })
+      zip.writeZip(zipName)
+    }
+  },
 }
 
 const DEFAULT_FUNCTIONS_SRC = 'netlify/functions'

package-lock.json

@@ -44,6 +44,7 @@
   "homepage": "https://github.com/netlify/netlify-plugin-nextjs#readme",
   "dependencies": {
     "@sls-next/lambda-at-edge": "^1.5.2",
+    "adm-zip": "^0.5.4",
     "chalk": "^4.1.0",
     "chokidar": "^3.5.1",
     "commander": "^7.1.0",