add root: true to Functions' lint configuration (#3029)

* Add root: true to eslintrc

Set `root: true` in the .eslintrc template, so that ESLint doesn't try to combine the configuration in the `functions` directory with the configuration in an `.eslintrc` file in the parent app directory.

* add root: true

Co-authored-by: Alf Eaton <[email protected]>

Author: bkendall

CHANGELOG.md

@@ -6,3 +6,4 @@
 - Fixes issue where authorized domains were not being correctly updated when deploying to Hosting channels. (#3002)
 - Fixes issue where the User-Agent was being overridden when proxying through the Hosting emulator. (#2970)
 - Fixes issue where Firestore Emulator wrongly triggers events on deleting an nonexistent document (#3043).
+- Adds `root: true` to lint configurations for newly initialized functions directories to prevent it being combined with a higher level config. (#2925)

templates/init/functions/javascript/_eslintrc

@@ -1,4 +1,5 @@
 module.exports = {
+  root: true,
   env: {
     es6: true,
     node: true,

templates/init/functions/typescript/_eslintrc

@@ -1,4 +1,5 @@
 module.exports = {
+  root: true,
   env: {
     es6: true,
     node: true,