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- 'use strict'
- const promise = require('./promise')
- const streamify = require('./streamify')
- module.exports = stringify
- /**
- * Public function `stringify`.
- *
- * Returns a promise and asynchronously serialises a data structure to a
- * JSON string. Sanely handles promises, buffers, maps and other iterables.
- *
- * @param data: The data to transform
- *
- * @option space: Indentation string, or the number of spaces
- * to indent each nested level by.
- *
- * @option promises: 'resolve' or 'ignore', default is 'resolve'.
- *
- * @option buffers: 'toString' or 'ignore', default is 'toString'.
- *
- * @option maps: 'object' or 'ignore', default is 'object'.
- *
- * @option iterables: 'array' or 'ignore', default is 'array'.
- *
- * @option circular: 'error' or 'ignore', default is 'error'.
- *
- * @option yieldRate: The number of data items to process per timeslice,
- * default is 16384.
- *
- * @option bufferLength: The length of the buffer, default is 1024.
- *
- * @option highWaterMark: If set, will be passed to the readable stream constructor
- * as the value for the highWaterMark option.
- *
- * @option Promise: The promise constructor to use, defaults to bluebird.
- **/
- function stringify (data, options) {
- const json = []
- const Promise = promise(options)
- const stream = streamify(data, options)
- let resolve, reject
- stream.on('data', read)
- stream.on('end', end)
- stream.on('error', error)
- stream.on('dataError', error)
- return new Promise((res, rej) => {
- resolve = res
- reject = rej
- })
- function read (chunk) {
- json.push(chunk)
- }
- function end () {
- resolve(json.join(''))
- }
- function error (e) {
- reject(e)
- }
- }
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