add legacy peer deps option

action.yml

@@ -22,6 +22,10 @@ inputs:
     required: false
     description: 'Title of the PR where $VERSION is the new version of NX.'
     default: 'Migrate NX to $VERSION'
+  legacyPeerDeps:
+    required: false
+    description: 'Value of the legacy-peer-deps flag for npm install.'
+    default: 'false'
 outputs:
   prId:
     description: 'Issue ID of the created PR'

src/inputs-helper.ts

@@ -7,12 +7,16 @@ export function getInputs(): Inputs {
   const includeMigrationsFile = core.getInput('includeMigrationsFile', {
     required: false
   })
+  const legacyPeerDeps = core.getInput('legacyPeerDeps', {
+    required: false
+  })
   const prTitle = core.getInput('prTitle', {required: false})
 
   return {
     repoToken,
     commitMessage,
     includeMigrationsFile: Boolean(includeMigrationsFile),
+    legacyPeerDeps: Boolean(legacyPeerDeps),
     prTitle
   }
 }

src/inputs.model.ts

@@ -3,4 +3,5 @@ export default interface Inputs {
   commitMessage: string
   prTitle: string
   includeMigrationsFile: boolean
+  legacyPeerDeps: boolean
 }

src/main.ts

@@ -52,7 +52,7 @@ async function run(): Promise<void> {
     )
 
     core.debug('Starting migrations...')
-    await migrate(inputs.includeMigrationsFile)
+    await migrate(inputs.includeMigrationsFile, inputs.legacyPeerDeps)
 
     core.debug('Pushing changes...')
     const commitMessage = inputs.commitMessage.replace(

src/nx-migrate.ts

@@ -1,18 +1,24 @@
 import {exec} from '@actions/exec'
 import fs from 'fs'
 
-export async function migrate(keepMigrationsFile: boolean): Promise<void> {
+export async function migrate(keepMigrationsFile: boolean, legacyPeerDeps: boolean): Promise<void> {
   await exec('npx nx migrate latest', [], {
     env: {
       ...process.env,
       npm_config_yes: 'true'
     }
   })
-  await exec('npm i')
+  await exec('npm i', [], {
+    env: {
+      ...process.env,
+      'npm_config_legacy_peer_deps': String(legacyPeerDeps)
+    }
+  })
   await exec('npx nx migrate --run-migrations=migrations.json', [], {
     env: {
       ...process.env,
-      npm_config_yes: 'true'
+      npm_config_yes: 'true',
+      'npm_config_legacy_peer_deps': String(legacyPeerDeps)
     }
   })