rich text / quill snippet

snippetize.ts

function snippetize(delta: DeltaStatic, maxLength: number): { ops: any[] } {
  const retVal = {
    ops: [],
  };
  let done = false;
  let idx = 0;
  let soFar = 0;
  while (!done && delta.ops.length > idx) {
    const op = Object.assign({}, delta.ops[idx]);
    idx = idx + 1;
    if (typeof op.insert === 'string') {
      op.insert = op.insert.replace(/\n/g, ' ');
      if (op.attributes) {
        delete op.attributes.list;
        delete op.attributes.bullet;
        delete op.attributes.ordered;
        delete op.attributes.header;
      }
      if (soFar + op.insert.length > maxLength) {
        op.insert = op.insert.slice(0, maxLength - soFar);
        op.insert = op.insert.slice(0, op.insert.lastIndexOf(' '));
        done = true;
      }
      soFar = soFar + op.insert.length;
      retVal.ops.push(op);
    } else if (op.insert.atmention || op.insert.hashtag) {
      retVal.ops.push(op);
    } else if (op.insert['trellis-image']) {
      retVal.ops.push(op);
      done = true;
    }
  }
  if (done) {
    retVal.ops.push({ insert: '... \n' });
  }
  return retVal;
}