Package Exports

json-to-ast

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (json-to-ast) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

JSON AST parser

Install

> npm install json-to-ast

Usage

const parse = require('json-to-ast');

const settings = {
  // Appends location information. Default is <true>
  loc: true,
  // Appends source information to node’s location. Default is <null>
  source: 'data.json'
};

parse('{"a": 1}', settings);

Output

{
  type: 'Object',
  children: [
    {
      type: 'Property',
      key: {
        type: 'Identifier',
        value: 'a',
        raw: '"a"',
        loc: {
          start: { line: 1, column: 2, offset: 1 },
          end: { line: 1, column: 5, offset: 4 },
          source: 'data.json'
        }
      },
      value: {
        type: 'Literal',
        value: 1,
        raw: '1',
        loc: {
          start: { line: 1, column: 7, offset: 6 },
          end: { line: 1, column: 8, offset: 7 },
          source: 'data.json'
        }
      },
      loc: {
        start: { line: 1, column: 2, offset: 1 },
        end: { line: 1, column: 8, offset: 7 },
        source: 'data.json'
      }
    }
  ],
  loc: {
    start: { line: 1, column: 1, offset: 0 },
    end: { line: 1, column: 9, offset: 8 },
    source: 'data.json'
  }
}

Node types

Object:

{
  type: 'Object',
  children: <Property>[],
  loc?: Object
}

Property:

{
  type: 'Property',
  key: <Identifier>,
  value: Object | Array | <Literal>,
  loc?: Object
}

Identifier:

{
  type: 'Identifier',
  value: string,
  raw: string,
  loc?: Object
}

Array:

{
  type: 'Array',
  children: (Object | Array | <Literal>)[],
  loc?: Object
}

Literal:

{
  type: 'Literal',
  value: string | number | boolean | null,
  raw: string,
  loc?: Object
}

AST explorer

Try it online on astexplorer.net

License

MIT