🎉 initiate project *astro_rewrite*

node_modules/unist-util-position/lib/index.js

@@ -0,0 +1,84 @@
+/**
+ * @typedef {import('unist').Position} Position
+ * @typedef {import('unist').Node} Node
+ * @typedef {import('unist').Point} Point
+ */
+
+/**
+ * @typedef NodeLike
+ * @property {string} type
+ * @property {PositionLike | null | undefined} [position]
+ *
+ * @typedef PositionLike
+ * @property {PointLike | null | undefined} [start]
+ * @property {PointLike | null | undefined} [end]
+ *
+ * @typedef PointLike
+ * @property {number | null | undefined} [line]
+ * @property {number | null | undefined} [column]
+ * @property {number | null | undefined} [offset]
+ */
+
+/**
+ * Get the starting point of `node`.
+ *
+ * @param node
+ *   Node.
+ * @returns
+ *   Point.
+ */
+export const pointStart = point('start')
+
+/**
+ * Get the ending point of `node`.
+ *
+ * @param node
+ *   Node.
+ * @returns
+ *   Point.
+ */
+export const pointEnd = point('end')
+
+/**
+ * Get the positional info of `node`.
+ *
+ * @param {NodeLike | Node | null | undefined} [node]
+ *   Node.
+ * @returns {Position}
+ *   Position.
+ */
+export function position(node) {
+  return {start: pointStart(node), end: pointEnd(node)}
+}
+
+/**
+ * Get the positional info of `node`.
+ *
+ * @param {'start' | 'end'} type
+ *   Side.
+ * @returns
+ *   Getter.
+ */
+function point(type) {
+  return point
+
+  /**
+   * Get the point info of `node` at a bound side.
+   *
+   * @param {NodeLike | Node | null | undefined} [node]
+   * @returns {Point}
+   */
+  function point(node) {
+    const point = (node && node.position && node.position[type]) || {}
+
+    // To do: next major: don’t return points when invalid.
+    return {
+      // @ts-expect-error: in practice, null is allowed.
+      line: point.line || null,
+      // @ts-expect-error: in practice, null is allowed.
+      column: point.column || null,
+      // @ts-expect-error: in practice, null is allowed.
+      offset: point.offset > -1 ? point.offset : null
+    }
+  }
+}