From ec99b486052c2045ccfaac9de09c1f87c53c04e4 Mon Sep 17 00:00:00 2001
From: Andrew Bastin <andrewbastin.k@gmail.com>
Date: Fri, 24 Jul 2020 00:38:14 -0400
Subject: [PATCH] Added JS linting to Ace Editor

---
 components/ui/ace-editor.vue | 37 ++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/components/ui/ace-editor.vue b/components/ui/ace-editor.vue
index ca77e09bc..7525c1c36 100644
--- a/components/ui/ace-editor.vue
+++ b/components/ui/ace-editor.vue
@@ -26,6 +26,8 @@ import "ace-builds/webpack-resolver"
 import jsonParse from "~/helpers/jsonParse"
 import debounce from "~/helpers/utils/debounce"
 
+import * as esprima from "esprima"
+
 export default {
   props: {
     value: {
@@ -136,6 +138,41 @@ export default {
             },
           ])
         }
+      } else if (this.lang === "javascript") {
+        try {
+          const res = esprima.parseScript(code, { tolerant: true })
+          console.log(res)
+          if (res.errors && res.errors.length > 0) {
+            this.editor.session.setAnnotations(
+              res.errors.map((err) => {
+                const pos = this.editor.session.getDocument().indexToPosition(err.index, 0)
+
+                console.log({
+                  row: pos.row,
+                  column: pos.column,
+                  text: err.description,
+                  type: "error",
+                })
+                return {
+                  row: pos.row,
+                  column: pos.column,
+                  text: err.description,
+                  type: "error",
+                }
+              })
+            )
+          }
+        } catch (e) {
+          const pos = this.editor.session.getDocument().indexToPosition(e.index, 0)
+          this.editor.session.setAnnotations([
+            {
+              row: pos.row,
+              column: pos.column,
+              text: e.description,
+              type: "error",
+            },
+          ])
+        }
       }
     }, 2000),
   },