fix: add isr warning

Author: ascorbic

src/helpers/config.js

@@ -1,5 +1,8 @@
-// @ts-check
+/* eslint-disable max-lines */
+
+const { yellowBright } = require('chalk')
 const { readJSON, existsSync } = require('fs-extra')
+const { outdent } = require('outdent')
 const { join, dirname, relative } = require('pathe')
 const slash = require('slash')
 
@@ -129,6 +132,13 @@ exports.generateRedirects = async ({ netlifyConfig, basePath, i18n }) => {
     })),
     { from: `${basePath}/*`, to: HANDLER_FUNCTION_PATH, status: 200 },
   )
+  if (hasIsr) {
+    console.log(
+      yellowBright(outdent`
+        You have some pages that use ISR (pages that use getStaticProps with revalidate set), which is not currently fully-supported by this plugin. Be aware that results may be unreliable.
+      `),
+    )
+  }
 }
 
 exports.getNextConfig = async function getNextConfig({ publish, failBuild = defaultFailBuild }) {
@@ -191,3 +201,4 @@ exports.configureHandlerFunctions = ({ netlifyConfig, publish, ignore = [] }) =>
     })
   })
 }
+/* eslint-enable max-lines */