fix(#1214): fixed code mirror lint issues

packages/bruno-app/src/utils/codemirror/javascript-lint.js

@@ -0,0 +1,92 @@
+/**
+ * MIT License
+ * https://github.com/codemirror/codemirror5/blob/master/LICENSE
+ *
+ * Copyright (C) 2017 by Marijn Haverbeke <marijnh@gmail.com> and others
+ */
+
+let CodeMirror;
+const SERVER_RENDERED = typeof navigator === 'undefined' || global['PREVENT_CODEMIRROR_RENDER'] === true;
+
+if (!SERVER_RENDERED) {
+  CodeMirror = require('codemirror');
+  const { filter } = require('lodash');
+
+  function validator(text, options) {
+    if (!window.JSHINT) {
+      if (window.console) {
+        window.console.error('Error: window.JSHINT not defined, CodeMirror JavaScript linting cannot run.');
+      }
+      return [];
+    }
+    if (!options.indent)
+      // JSHint error.character actually is a column index, this fixes underlining on lines using tabs for indentation
+      options.indent = 1; // JSHint default value is 4
+    JSHINT(text, options, options.globals);
+    var errors = JSHINT.data().errors,
+      result = [];
+
+    /*
+     * Filter out errors due to top level awaits
+     * See https://github.com/usebruno/bruno/issues/1214
+     *
+     * Once JSHINT top level await support is added, this file can be removed
+     * and we can use the default javascript-lint addon from codemirror
+     */
+    errors = filter(errors, (error) => {
+      if (error.code === 'E058') {
+        if (
+          error.evidence &&
+          error.evidence.includes('await') &&
+          error.reason === 'Missing semicolon.' &&
+          error.scope === '(main)'
+        ) {
+          return false;
+        }
+
+        return true;
+      }
+
+      return true;
+    });
+
+    if (errors) parseErrors(errors, result);
+
+    return result;
+  }
+
+  CodeMirror.registerHelper('lint', 'javascript', validator);
+
+  function parseErrors(errors, output) {
+    for (var i = 0; i < errors.length; i++) {
+      var error = errors[i];
+      if (error) {
+        if (error.line <= 0) {
+          if (window.console) {
+            window.console.warn('Cannot display JSHint error (invalid line ' + error.line + ')', error);
+          }
+          continue;
+        }
+
+        var start = error.character - 1,
+          end = start + 1;
+        if (error.evidence) {
+          var index = error.evidence.substring(start).search(/.\b/);
+          if (index > -1) {
+            end += index;
+          }
+        }
+
+        // Convert to format expected by validation service
+        var hint = {
+          message: error.reason,
+          severity: error.code ? (error.code.startsWith('W') ? 'warning' : 'error') : 'error',
+          from: CodeMirror.Pos(error.line - 1, start),
+          to: CodeMirror.Pos(error.line - 1, end)
+        };
+
+        output.push(hint);
+      }
+    }
+  }
+}