56 lines
1.2 KiB
Plaintext
56 lines
1.2 KiB
Plaintext
/**
|
|
* @import {CreateTracker, TrackCurrent, TrackMove, TrackShift} from '../types.js'
|
|
*/
|
|
|
|
/**
|
|
* Track positional info in the output.
|
|
*
|
|
* @type {CreateTracker}
|
|
*/
|
|
export function track(config) {
|
|
// Defaults are used to prevent crashes when older utilities somehow activate
|
|
// this code.
|
|
/* c8 ignore next 5 */
|
|
const options = config || {}
|
|
const now = options.now || {}
|
|
let lineShift = options.lineShift || 0
|
|
let line = now.line || 1
|
|
let column = now.column || 1
|
|
|
|
return {move, current, shift}
|
|
|
|
/**
|
|
* Get the current tracked info.
|
|
*
|
|
* @type {TrackCurrent}
|
|
*/
|
|
function current() {
|
|
return {now: {line, column}, lineShift}
|
|
}
|
|
|
|
/**
|
|
* Define an increased line shift (the typical indent for lines).
|
|
*
|
|
* @type {TrackShift}
|
|
*/
|
|
function shift(value) {
|
|
lineShift += value
|
|
}
|
|
|
|
/**
|
|
* Move past some generated markdown.
|
|
*
|
|
* @type {TrackMove}
|
|
*/
|
|
function move(input) {
|
|
// eslint-disable-next-line unicorn/prefer-default-parameters
|
|
const value = input || ''
|
|
const chunks = value.split(/\r?\n|\r/g)
|
|
const tail = chunks[chunks.length - 1]
|
|
line += chunks.length - 1
|
|
column =
|
|
chunks.length === 1 ? column + tail.length : 1 + tail.length + lineShift
|
|
return value
|
|
}
|
|
}
|