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node_modules/vue/packages/compiler-sfc/test/util.ts

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+import {
+  parse,
+  compileScript,
+  type SFCParseOptions,
+  type SFCScriptCompileOptions
+} from '../src'
+import { parse as babelParse } from '@babel/parser'
+
+export const mockId = 'xxxxxxxx'
+
+export function compile(
+  source: string,
+  options?: Partial<SFCScriptCompileOptions>,
+  parseOptions?: Partial<SFCParseOptions>
+) {
+  const sfc = parse({
+    ...parseOptions,
+    source
+  })
+  return compileScript(sfc, { id: mockId, ...options })
+}
+
+export function assertCode(code: string) {
+  // parse the generated code to make sure it is valid
+  try {
+    babelParse(code, {
+      sourceType: 'module',
+      plugins: ['typescript']
+    })
+  } catch (e: any) {
+    console.log(code)
+    throw e
+  }
+  expect(code).toMatchSnapshot()
+}