sgauthier
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88 lines
4.0 KiB
JavaScript
88 lines
4.0 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = remarkSquashReferences;
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var _flatten2 = _interopRequireDefault(require("lodash/flatten"));
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var _without2 = _interopRequireDefault(require("lodash/without"));
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var _unistBuilder = _interopRequireDefault(require("unist-builder"));
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var _mdastUtilDefinitions = _interopRequireDefault(require("mdast-util-definitions"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
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function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
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function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
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function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : String(i); }
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function _toPrimitive(t, r) { if ("object" != typeof t || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != typeof i) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
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/**
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* Raw markdown may contain image references or link references. Because there
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* is no way to maintain these references within the Slate AST, we convert image
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* and link references to standard images and links by putting their url's
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* inline. The definitions are then removed from the document.
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*
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* For example, the following markdown:
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*
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* ```
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* ![alpha][bravo]
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*
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* [bravo]: http://example.com/example.jpg
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* ```
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*
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* Yields:
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*
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* ```
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* 
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* ```
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*
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*/
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function remarkSquashReferences() {
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return getTransform;
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function getTransform(node) {
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const getDefinition = (0, _mdastUtilDefinitions.default)(node);
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return transform.call(null, getDefinition, node);
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}
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function transform(getDefinition, node) {
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/**
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* Bind the `getDefinition` function to `transform` and recursively map all
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* nodes.
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*/
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const boundTransform = transform.bind(null, getDefinition);
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const children = node.children ? node.children.map(boundTransform) : node.children;
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/**
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* Combine reference and definition nodes into standard image and link
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* nodes.
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*/
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if (['imageReference', 'linkReference'].includes(node.type)) {
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const type = node.type === 'imageReference' ? 'image' : 'link';
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const definition = getDefinition(node.identifier);
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if (definition) {
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const {
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title,
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url
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} = definition;
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return (0, _unistBuilder.default)(type, {
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title,
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url,
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alt: node.alt
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}, children);
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}
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const pre = (0, _unistBuilder.default)('text', node.type === 'imageReference' ? '![' : '[');
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const post = (0, _unistBuilder.default)('text', ']');
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const nodes = children || [(0, _unistBuilder.default)('text', node.alt)];
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return [pre, ...nodes, post];
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}
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/**
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* Remove definition nodes and filter the resulting null values from the
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* filtered children array.
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*/
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if (node.type === 'definition') {
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return null;
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}
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const filteredChildren = (0, _without2.default)(children, null);
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return _objectSpread(_objectSpread({}, node), {}, {
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children: (0, _flatten2.default)(filteredChildren)
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});
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}
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} |