@atlaskit/editor-plugin-code-block/dist/es2019/pm-plugins/ide-ux/bracket-handling.js

Code block plugin for @atlaskit/editor-core

export const BRACKET_MAP = {
  '{': '}',
  '[': ']',
  '(': ')'
};
// when directly before a closing bracket
// Ignored via go/ees005
// eslint-disable-next-line require-unicode-regexp
const CLOSING_BRACKET_REGEX = /^[}\])]/;
// exclusion: when directly before a non-whitespace character
// Ignored via go/ees005
// eslint-disable-next-line require-unicode-regexp
const NON_WHITESPACE_AFTER_REGEX = /^[^\s]/;
export const shouldAutoCloseBracket = (before, after) => {
  // when directly before a closing bracket
  if (CLOSING_BRACKET_REGEX.test(after)) {
    return true;
  }

  // exclusion: when directly before a non-whitespace character
  if (NON_WHITESPACE_AFTER_REGEX.test(after)) {
    return false;
  }
  return true;
};
export const getAutoClosingBracketInfo = (before, after) => {
  const left = Object.keys(BRACKET_MAP).find(item => before.endsWith(item));
  const right = left ? BRACKET_MAP[left] : undefined;
  const hasTrailingMatchingBracket = right ? after.startsWith(right) : false;
  return {
    left,
    right,
    hasTrailingMatchingBracket
  };
};