winbox-ui-next/es/mention/utils.js

We Design Vue 2.0: A Vue.js 3 UI Library

const getTextBeforeSelection = (element) => {
  const { value, selectionStart } = element;
  return value.slice(0, selectionStart);
};
const getLastMeasureIndex = (text, prefix) => {
  const _prefix = [].concat(prefix);
  return _prefix.reduce((pre, value) => {
    const lastIndex = text.lastIndexOf(value);
    if (lastIndex > pre.location) {
      return {
        location: lastIndex,
        prefix: value
      };
    }
    return pre;
  }, {
    location: -1,
    prefix: ""
  });
};
const isValidSearch = (text, split) => {
  return !split || !text.includes(split);
};
export { getLastMeasureIndex, getTextBeforeSelection, isValidSearch };