Get transaction name from graphql query

graphQLTransactionName.js

const assert = require('assert');

function getGraphQLTransactionName(query) {
    let parsed;
    let models = [];
    // Looks for model tokens
    while (null !== (parsed = (new RegExp(/(\w+)(?:\(.+\))? {/gmi)).exec(query))) {
        query = query.replace(parsed[0], '');
        // Appends the first capture group
        if (parsed[1] !== 'query') models.push(`[${parsed[1]}]`);
    }
    return `graphql ${models.join(' ')}`
}




//---- Tests

function expect(value, expectation) {
    assert(value === expectation, `${value} is not equal to ${expectation}`);
}

expect(getGraphQLTransactionName(`query {
    post(id: 5) {
      id,
      name,
      comments {
        name,
        message
      }
    }
  }`), 'graphql [post] [comments]')