Jest to Vitest migration (#230)

* working without clean up

* clean up dependencies

* use test not dev

* add tests for kclErrToDiagnostic

* remove jest config

* remove unneeded @ts-ignore

src/lang/errors.test.ts

@@ -0,0 +1,51 @@
+import { kclErrToDiagnostic, KCLError } from './errors'
+
+describe('test kclErrToDiagnostic', () => {
+  it('converts KCL errors to CodeMirror diagnostics', () => {
+    const errors: KCLError[] = [
+      {
+        kind: 'semantic',
+        msg: 'Semantic error',
+        sourceRanges: [
+          [0, 1],
+          [2, 3],
+        ],
+      },
+      {
+        kind: 'type',
+        msg: 'Type error',
+        sourceRanges: [
+          [4, 5],
+          [6, 7],
+        ],
+      },
+    ]
+    const diagnostics = kclErrToDiagnostic(errors)
+    expect(diagnostics).toEqual([
+      {
+        from: 0,
+        to: 1,
+        message: 'Semantic error',
+        severity: 'error',
+      },
+      {
+        from: 2,
+        to: 3,
+        message: 'Semantic error',
+        severity: 'error',
+      },
+      {
+        from: 4,
+        to: 5,
+        message: 'Type error',
+        severity: 'error',
+      },
+      {
+        from: 6,
+        to: 7,
+        message: 'Type error',
+        severity: 'error',
+      },
+    ])
+  })
+})