Function createExp

packages/compiler-core/src/parser.ts:971–1010

(
  content: SimpleExpressionNode['content'],
  isStatic: SimpleExpressionNode['isStatic'] = false,
  loc: SourceLocation,
  constType: ConstantTypes = ConstantTypes.NOT_CONSTANT,
  parseMode = ExpParseMode.Normal,
)

}

function createExp(
  content: SimpleExpressionNode['content'],
  isStatic: SimpleExpressionNode['isStatic'] = false,
  loc: SourceLocation,
  constType: ConstantTypes = ConstantTypes.NOT_CONSTANT,
  parseMode = ExpParseMode.Normal,
) {
  const exp = createSimpleExpression(content, isStatic, loc, constType)
  if (
    !__BROWSER__ &&
    !isStatic &&
    currentOptions.prefixIdentifiers &&
    parseMode !== ExpParseMode.Skip &&
    content.trim()
  ) {
    if (isSimpleIdentifier(content)) {
      exp.ast = null // fast path
      return exp
    }
    try {
      const plugins = currentOptions.expressionPlugins
      const options: BabelOptions = {
        plugins: plugins ? [...plugins, 'typescript'] : ['typescript'],
      }
      if (parseMode === ExpParseMode.Statements) {
        // v-on with multi-inline-statements, pad 1 char
        exp.ast = parse(` ${content} `, options).program
      } else if (parseMode === ExpParseMode.Params) {
        exp.ast = parseExpression(`(${content})=>{}`, options)
      } else {
        // normal exp, wrap with parens
        exp.ast = parseExpression(`(${content})`, options)
      }
    } catch (e: any) {
      exp.ast = false // indicate an error
      emitError(ErrorCodes.X_INVALID_EXPRESSION, loc.start.offset, e.message)
    }
  }
  return exp
}

function emitError(code: ErrorCodes, index: number, message?: string) {
  currentOptions.onError(