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tony-sull 2022-04-18 16:31:07 +00:00 committed by github-actions[bot]
parent 394ab90547
commit dfa1042f2b
1 changed files with 12 additions and 10 deletions
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22
packages/astro/components/Shiki.js
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@ -4,19 +4,21 @@ import { getHighlighter as getShikiHighlighter } from 'shiki';
const _resolvedHighlighters = new Map(); const _resolvedHighlighters = new Map();
function stringify(opts) { function stringify(opts) {
// Always sort keys before stringifying to make sure objects match regardless of parameter ordering // Always sort keys before stringifying to make sure objects match regardless of parameter ordering
return JSON.stringify(opts, Object.keys(opts).sort()); return JSON.stringify(opts, Object.keys(opts).sort());
} }
export function getHighlighter(opts) { export function getHighlighter(opts) {
const key = stringify(opts); const key = stringify(opts);
// Highlighter has already been requested, reuse the same instance // Highlighter has already been requested, reuse the same instance
if (_resolvedHighlighters.has(key)) { return _resolvedHighlighters.get(key) } if (_resolvedHighlighters.has(key)) {
return _resolvedHighlighters.get(key);
}
// Start the async getHighlighter call and cache the Promise // Start the async getHighlighter call and cache the Promise
const highlighter = getShikiHighlighter(opts); const highlighter = getShikiHighlighter(opts);
_resolvedHighlighters.set(key, highlighter); _resolvedHighlighters.set(key, highlighter);
return highlighter; return highlighter;
} }