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json-source-map\nParse/stringify JSON and provide source-map for JSON-pointers to all nodes.\n\nNEW: supports BigInt, Maps, Sets and Typed arrays.\n\n[![Build Status](https://travis-ci.org/epoberezkin/json-source-map.svg?branch=master)](https://travis-ci.org/epoberezkin/json-source-map)\n[![npm version](https://badge.fury.io/js/json-source-map.svg)](https://www.npmjs.com/package/json-source-map)\n[![Coverage Status](https://coveralls.io/repos/github/epoberezkin/json-source-map/badge.svg?branch=master)](https://coveralls.io/github/epoberezkin/json-source-map?branch=master)\n\n\n## Install\n\n```bash\nnpm install json-source-map\n```\n\n\n## Possible use cases\n\n#### Source maps\n\nWhen a domain-specific language that compiles to JavaScript uses JSON as a format, this module can be used as a replacement for standard JSON to simplify generation of source maps.\n\n#### Editing forms/JSON\n\nWhen a form also allows to edit JSON representation of data on the same screen, this module can be used to sinchronise navigation in JSON and in the form.\n\n\n## Usage\n\n#### Stringify\n\n```javascript\nvar jsonMap = require('json-source-map');\nvar result = jsonMap.stringify({ foo: 'bar' }, null, 2);\nconsole.log('json:');\nconsole.log(result.json);\nconsole.log('\\npointers:');\nconsole.log(result.pointers);\n```\n\noutput:\n\n```text\njson:\n{\n  \"foo\": \"bar\"\n}\n\npointers:\n{ '':\n   { value: { line: 0, column: 0, pos: 0 },\n     valueEnd: { line: 2, column: 1, pos: 18 } },\n  '/foo':\n   { key: { line: 1, column: 2, pos: 4 },\n     keyEnd: { line: 1, column: 7, pos: 9 },\n     value: { line: 1, column: 9, pos: 11 },\n     valueEnd: { line: 1, column: 14, pos: 16 } } }\n```\n\n\n#### Parse\n\n```javascript\nvar result = jsonMap.parse('{ \"foo\": \"bar\" }');\nconsole.log('data:')\nconsole.log(result.data);\nconsole.log('\\npointers:');\nconsole.log(result.pointers);\n```\n\noutput:\n```text\ndata:\n{ foo: 'bar' }\n\npointers:\n{ '':\n   { value: { line: 0, column: 0, pos: 0 },\n     valueEnd: { line: 0, column: 16, pos: 16 } },\n  '/foo':\n   { key: { line: 0, column: 2, pos: 2 },\n     keyEnd: { line: 0, column: 7, pos: 7 },\n     value: { line: 0, column: 9, pos: 9 },\n     valueEnd: { line: 0, column: 14, pos: 14 } } }\n```\n\n\n## API\n\n#### .parse(String json, Any _, Object options) -> Object;\n\nParses JSON string. Returns object with properties:\n- _data_: parsed data.\n- _pointers_: an object where each key is a JSON pointer ([RFC 6901](https://tools.ietf.org/html/rfc6901)), each corresponding value is a mapping object.\n\nMapping object has properties:\n- _key_: location object (see below) of the beginning of the key in JSON string. This property is only present if parent data is an object (rather than array).\n- _keyEnd_: location of the end of the key in JSON string. This property is only present if parent data is an object.\n- _value_: location of the beginning of the value in JSON string.\n- _valueEnd_: location of the end of the value in JSON string.\n\nLocation object has properties (zero-based numbers):\n- _line_: line number in JSON file.\n- _column_: column number in JSON string (from the beginning of line).\n- _pos_: character position in JSON file (from the beginning of JSON string).\n\nOptions:\n- _bigint_: parse large integers as [BigInt](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt).\n\nWhitespace:\n- the only character that increases line number in mappings is line feed ('\\n'), so if your JSON string has '\\r\\n' sequence, it will still be counted as one line,\n- both '\\r' and '\\n' are counted as a character when determining `pos` (it is possible to slice sections of JSON string using `pos` property), but `column` counter is reset when `r` or `n` is encountered,\n- tabs ('\\t') are counted as four spaces when determining `column` but as a single character for `pos`.\n\nComparison with the standard `JSON.parse`:\n- when it is not possible to parse JSON, a SyntaxError exception with exactly the same message is thrown,\n- `reviver` parameter of [JSON.parse](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Using_the_reviver_parameter) is not supported, but its position is reserved.\n- supports parsing large integers as [BigInt](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) (with the option `bigint: true`).\n\n\n#### .stringify(Any data, Any _, String|Number|Object space) -> Object;\n\nStringifies JavaScript data. Returns object with properties:\n- _json_: JSON string - stringified data.\n- _pointers_: an object where each key is a JSON-pointer, each corresponding value is a mapping object (same format as in parse method).\n\nComparison with the standard `JSON.stringify`:\n- `replacer` parameter of [JSON.stringify](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#The_replacer_parameter) is not supported, but its position is reserved.\n- `space` parameter is supported, but if it is a string, it may only contain characters space, tab ('\\t'), caret return ('\\r') and line feed ('\\n') - using any other caracter throws an exception. If this parameter is an object, it is options.\n\nOptions:\n- _space_: same as `space` parameter.\n- _es6_: stringify ES6 Maps, Sets and Typed arrays (as JSON arrays).\n\n\n## License\n\n[MIT](https://github.com/epoberezkin/json-source-map/blob/master/LICENSE)\n","_attachments":{},"homepage":"https://github.com/epoberezkin/json-source-map#readme","bugs":{"url":"https://github.com/epoberezkin/json-source-map/issues"},"license":"MIT"}