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

Code block plugin for @atlaskit/editor-core

import { getCursor } from '../utils';
export const isSelectionEntirelyInsideCodeBlock = state => state.selection.$from.sameParent(state.selection.$to) && state.selection.$from.parent.type === state.schema.nodes.codeBlock;
export const isCursorInsideCodeBlock = state => !!getCursor(state.selection) && isSelectionEntirelyInsideCodeBlock(state);
export const getStartOfCurrentLine = state => {
  const {
    $from
  } = state.selection;
  if ($from.nodeBefore && $from.nodeBefore.isText) {
    // Ignored via go/ees005
    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
    const prevNewLineIndex = $from.nodeBefore.text.lastIndexOf('\n');
    return {
      // Ignored via go/ees005
      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
      text: $from.nodeBefore.text.substring(prevNewLineIndex + 1),
      pos: $from.start() + prevNewLineIndex + 1
    };
  }
  return {
    text: '',
    pos: $from.pos
  };
};
export const getEndOfCurrentLine = state => {
  const {
    $to
  } = state.selection;
  if ($to.nodeAfter && $to.nodeAfter.isText) {
    // Ignored via go/ees005
    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
    const nextNewLineIndex = $to.nodeAfter.text.indexOf('\n');
    return {
      // Ignored via go/ees005
      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
      text: $to.nodeAfter.text.substring(0, nextNewLineIndex >= 0 ? nextNewLineIndex : undefined),
      pos: nextNewLineIndex >= 0 ? $to.pos + nextNewLineIndex : $to.end()
    };
  }
  return {
    text: '',
    pos: $to.pos
  };
};
export function getLinesFromSelection(state) {
  const {
    pos: start
  } = getStartOfCurrentLine(state);
  const {
    pos: end
  } = getEndOfCurrentLine(state);
  const text = state.doc.textBetween(start, end);
  return {
    text,
    start,
    end
  };
}
export const forEachLine = (text, callback) => {
  let offset = 0;
  text.split('\n').forEach(line => {
    callback(line, offset);
    offset += line.length + 1;
  });
};

// Ignored via go/ees005
// eslint-disable-next-line require-unicode-regexp
const SPACE = {
  token: ' ',
  size: 2,
  regex: /[^ ]/
};
// Ignored via go/ees005
// eslint-disable-next-line require-unicode-regexp
const TAB = {
  token: '\t',
  size: 1,
  regex: /[^\t]/
};
export const getLineInfo = line => {
  const indentToken = line.startsWith('\t') ? TAB : SPACE;
  const indentLength = line.search(indentToken.regex);
  const indentText = line.substring(0, indentLength >= 0 ? indentLength : line.length);
  return {
    indentToken,
    indentText
  };
};