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fix: crash on any backticks code block without lang specified
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@ -16,4 +16,8 @@ describe('prism.js helpers', () => {
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test('highlight raw text should just return text', () => {
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expect(highlight('Hello world', 'clike')).toBe('Hello world');
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});
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test('highlight should not throw with lang undefined', () => {
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expect(highlight('Hello world', undefined)).toBe('Hello world');
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});
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});
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@ -42,7 +42,7 @@ export function mapLang(lang: string): string {
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* @param lang highlight language
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* @return highlighted souce code as **html string**
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*/
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export function highlight(source: string, lang: string): string {
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export function highlight(source: string, lang: string = DEFAULT_LANG): string {
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lang = lang.toLowerCase();
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let grammar = Prism.languages[lang];
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if (!grammar) {
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