fix(no-undefined-types): allow any available identifier; fixes #178,#1342

Author: sebastian-fredriksson-bernholtz

docs/rules/no-undefined-types.md

@@ -807,6 +807,15 @@ function quux(foo) {
 
 quux(0);
 
+function quux() {
+ const foo = 1;
+ /** {@link foo} */
+ const bar = foo;
+ console.log(bar);
+}
+
+quux();
+
 /**
  * @import BadImportIgnoredByThisRule
  */

src/rules/noUndefinedTypes.js

@@ -222,6 +222,19 @@ export default iterateJsdoc(({
  // Program scope inside
  const cjsOrESMScope = globalScope.childScopes[0]?.block?.type === 'Program';
 
+ /**
+ * @param {import("eslint").Scope.Scope | null} scope
+ * @returns {Set<string>}
+ */
+ const getValidRuntimeIdentifiers = (scope) => {
+ return scope
+ ? new Set([
+ ...new Set(scope.variables.map(({ name }) => name)),
+ ...getValidRuntimeIdentifiers(scope.upper),
+ ])
+ : new Set();
+ };
+
  const allDefinedTypes = new Set(globalScope.variables.map(({
  name,
  }) => {
@@ -247,6 +260,7 @@ export default iterateJsdoc(({
  .concat(importTags)
  .concat(definedTypes)
  .concat(/** @type {string[]} */ (definedPreferredTypes))
+ .concat(...getValidRuntimeIdentifiers(node && sourceCode.getScope(node)))
  .concat(
  settings.mode === 'jsdoc' ?
  [] :

test/rules/assertions/noUndefinedTypes.js

@@ -1482,6 +1482,18 @@ export default /** @type {import('../index.js').TestCases} */ ({
  'no-unused-vars': 'error',
  },
  },
+ {
+ code: `
+ function quux() {
+ const foo = 1;
+ /** {@link foo} */
+ const bar = foo;
+ console.log(bar);
+ }
+
+ quux();
+ `,
+ },
  {
  code: `
  /**