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Deep freeze name/tokens/lines/frontMatterLines properties of params object before passing to (custom) rules for shared access.

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David Anson 2021-12-23 04:34:25 +00:00 • committed by GitHub
parent 5253669495
commit 5f0040679d
4 changed files with 98 additions and 16 deletions
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27
helpers/helpers.js
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@ -276,6 +276,7 @@ function isMathBlock(token) {
!token.type.endsWith("_end")
);
}
module.exports.isMathBlock = isMathBlock;
// Get line metadata array
module.exports.getLineMetadata = function getLineMetadata(params) {
@ -341,10 +342,6 @@ module.exports.flattenLists = function flattenLists(tokens) {
const nestingStack = [];
let lastWithMap = { "map": [ 0, 1 ] };
tokens.forEach((token) => {
if (isMathBlock(token) && token.map[1]) {
// markdown-it-texmath plugin does not account for math_block_end
token.map[1]++;
}
if ((token.type === "bullet_list_open") ||
(token.type === "ordered_list_open")) {
// Save current context and start a new one
@ -876,3 +873,25 @@ function getNextChildToken(parentToken, childToken, nextType, nextNextType) {
return null;
}
module.exports.getNextChildToken = getNextChildToken;
/**
* Calls Object.freeze() on an object and its children.
*
* @param {Object} obj Object to deep freeze.
* @returns {Object} Object passed to the function.
*/
function deepFreeze(obj) {
const pending = [ obj ];
let current = null;
while ((current = pending.shift())) {
Object.freeze(current);
for (const name of Object.getOwnPropertyNames(current)) {
const value = current[name];
if (value && (typeof value === "object")) {
pending.push(value);
}
}
}
return obj;
}
module.exports.deepFreeze = deepFreeze;