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Update parse.ts

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Acid Chicken (硫酸鶏) 2019-05-12 22:20:31 +09:00 • committed by GitHub
parent 2eedc91d74
commit 1d3a92979f
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1 changed files with 8 additions and 12 deletions
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20
src/mfm/parse.ts
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@ -2,18 +2,14 @@ import { mfmLanguage } from './language';
import { MfmForest } from './prelude';
import { normalize } from './normalize';
export function parse(source: string | null): MfmForest | null {
if (source == null || source == '') {
return null;
}
return normalize(mfmLanguage.root.tryParse(source));
export function parse<T extends string | null>(source: T): T extends string ? MfmForest : null {
return typeof source === 'string' ?
normalize(mfmLanguage.root.tryParse(source)) :
null as any;
}
export function parsePlain(source: string | null): MfmForest | null {
if (source == null || source == '') {
return null;
}
return normalize(mfmLanguage.plain.tryParse(source));
export function parsePlain<T extends string | null>(source: T): T extends string ? MfmForest : null {
return typeof source === 'string' ?
normalize(mfmLanguage.plain.tryParse(source)) :
null as any;
}