monaco-yaml/examples/vite-example/index.js

import { editor, Uri } from 'monaco-editor';
import EditorWorker from 'monaco-editor/esm/vs/editor/editor.worker?worker';
import { setDiagnosticsOptions } from 'monaco-yaml';
import YamlWorker from 'monaco-yaml/lib/esm/yaml.worker?worker';

window.MonacoEnvironment = {
  getWorker(moduleId, label) {
    switch (label) {
      case 'editorWorkerService':
        return new EditorWorker();
      case 'yaml':
        return new YamlWorker();
      default:
        throw new Error(`Unknown label ${label}`);
    }
  },
};

// The uri is used for the schema file match.
const modelUri = Uri.parse('a://b/foo.yaml');

setDiagnosticsOptions({
  enableSchemaRequest: true,
  hover: true,
  completion: true,
  validate: true,
  format: true,
  schemas: [
    {
      // Id of the first schema
      uri: 'http://myserver/foo-schema.json',
      // Associate with our model
      fileMatch: [String(modelUri)],
      schema: {
        type: 'object',
        properties: {
          p1: {
            enum: ['v1', 'v2'],
          },
          p2: {
            // Reference the second schema
            $ref: 'http://myserver/bar-schema.json',
          },
        },
      },
    },
    {
      // Id of the first schema
      uri: 'http://myserver/bar-schema.json',
      schema: {
        type: 'object',
        properties: {
          q1: {
            enum: ['x1', 'x2'],
          },
        },
      },
    },
  ],
});

const value = 'p1: \np2: \n';

editor.create(document.getElementById('editor'), {
  automaticLayout: true,
  model: editor.createModel(value, 'yaml', modelUri),
});