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type MakeUrl = (p: {  txt: string;  grammarAuthKey: string;}) => string;const makeUrl: MakeUrl = (p) =>  `https://api.textgears.com/grammar?key=${p.grammarAuthKey}&text=${    encodeURI(p.txt)  }`;
type GrammarCheckResponse = null | {  status: boolean;  response: {    result: boolean;    errors: Array<      {        id: string;        offset: number;        length: number;        description: {          en: string;        };        bad: string;        better: Array<string>;        type: "spelling";      }    >;  };};type GrammarCheck = (p: {  txt: string;  grammarAuthKey: string;}) => Promise<  void | {    description: {      en: string;    };    bad: string;    better: string[];  }[]>;
/** * @see https://textgears.com/api#grammar */export const grammarCheck: GrammarCheck = (p) =>  fetch(makeUrl(p))    .then<GrammarCheckResponse>((v) => v.ok ? v.json() : null)    .then((v) => {      if (v === null) {        return [];      }
      const allowTexts = p.txt.match(/`(.*?)`/g) || [];      return v.response.errors        .map((vv) => ({          description: {            en: vv.description.en,          },          bad: vv.bad,          better: vv.better,        }))        .filter((o) => !allowTexts.some((txt) => txt === `\`${o.bad}\``)) || [];    })    .catch(console.error);