xiaoyu
51 lines
1.1 KiB
JavaScript
51 lines
1.1 KiB
JavaScript
/**
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* @typedef {import('unist').Position} Position
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* @typedef {import('unist').Node} Node
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* @typedef {Record<string, unknown> & {type: string, position?: PositionLike|undefined}} NodeLike
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* @typedef {import('unist').Point} Point
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*
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* @typedef {Partial<Point>} PointLike
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*
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* @typedef PositionLike
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* @property {PointLike} [start]
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* @property {PointLike} [end]
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*/
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export const pointStart = point('start')
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export const pointEnd = point('end')
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/**
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* Get the positional info of `node`.
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*
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* @param {NodeLike|Node} [node]
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* @returns {Position}
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*/
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export function position(node) {
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return {start: pointStart(node), end: pointEnd(node)}
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}
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/**
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* Get the positional info of `node`.
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*
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* @param {'start'|'end'} type
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*/
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function point(type) {
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return point
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/**
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* Get the positional info of `node`.
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*
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* @param {NodeLike|Node} [node]
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* @returns {Point}
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*/
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function point(node) {
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const point = (node && node.position && node.position[type]) || {}
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return {
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line: point.line || null,
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column: point.column || null,
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offset: point.offset > -1 ? point.offset : null
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}
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}
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}
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