All files / packages/tao-utils/src trigram-filter.js

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import { AppCtx } from '@tao.js/core';
 
export default function trigramFilter(...trigrams) {
  if (!trigrams.length || trigrams[0] == null) {
    return ac => ac instanceof AppCtx;
  }
  let exact = false;
  if (typeof trigrams[0] === 'boolean') {
    exact = trigrams.shift();
  }
  if (Array.isArray(trigrams[0])) {
    trigrams = trigrams[0];
  }
  return ac => {
    if (!(ac instanceof AppCtx)) {
      return false;
    }
    return trigrams.some(trigram => ac.isMatch(trigram, exact));
  };
}