graphql#Lexer TypeScript Examples

The following examples show how to use graphql#Lexer. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: utils.ts    From graphql-eslint with MIT License 7 votes vote down vote up 
function getLexer(source: Source): Lexer {
  // GraphQL v14
  const gqlLanguage = require('graphql/language');
  if (gqlLanguage && gqlLanguage.createLexer) {
    return gqlLanguage.createLexer(source, {});
  }

  // GraphQL v15
  const { Lexer: LexerCls } = require('graphql');
  if (LexerCls && typeof LexerCls === 'function') {
    return new LexerCls(source);
  }

  throw new Error('Unsupported GraphQL version! Please make sure to use GraphQL v14 or newer!');
}