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fix: crash on any backticks code block without lang specified

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This commit is contained in:
Roman Hotsiy 2018-08-09 08:44:01 +03:00
parent fc31145b24
commit 58ae668f64
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GPG Key ID: 5CB7B3ACABA57CB0
2 changed files with 5 additions and 1 deletions
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4
src/services/__tests__/prism.test.ts
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@ -16,4 +16,8 @@ describe('prism.js helpers', () => {
test('highlight raw text should just return text', () => { test('highlight raw text should just return text', () => {
expect(highlight('Hello world', 'clike')).toBe('Hello world'); expect(highlight('Hello world', 'clike')).toBe('Hello world');
}); });
test('highlight should not throw with lang undefined', () => {
expect(highlight('Hello world', undefined)).toBe('Hello world');
});
}); });

2
src/utils/highlight.ts
View File

@ -42,7 +42,7 @@ export function mapLang(lang: string): string {
* @param lang highlight language * @param lang highlight language
* @return highlighted souce code as **html string** * @return highlighted souce code as **html string**
*/ */
export function highlight(source: string, lang: string): string { export function highlight(source: string, lang: string = DEFAULT_LANG): string {
lang = lang.toLowerCase(); lang = lang.toLowerCase();
let grammar = Prism.languages[lang]; let grammar = Prism.languages[lang];
if (!grammar) { if (!grammar) {