@atlaskit/editor-core/dist/es5/plugins/code-mirror/keymaps.js

A package contains Atlassian editor core functionality

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var prosemirror_1 = require("../../prosemirror");
function codeMirrorKeymapsPlugin() {
    return prosemirror_1.keymap({
        ArrowLeft: arrowHandler('left'),
        ArrowRight: arrowHandler('right'),
        ArrowUp: arrowHandler('up'),
        ArrowDown: arrowHandler('down')
    });
}
exports.default = codeMirrorKeymapsPlugin;
function arrowHandler(dir) {
    return function (state, dispatch, view) {
        if (state.selection.empty && view.endOfTextblock(dir)) {
            var side = dir === 'left' || dir === 'up' ? -1 : 1;
            var $head = state.selection.$head;
            var nextPos = prosemirror_1.Selection.near(state.doc.resolve(side > 0 ? $head.after() : $head.before()), side);
            if (nextPos.$head && nextPos.$head.parent.type.name === 'codeBlock') {
                dispatch(state.tr.setSelection(nextPos));
                return true;
            }
        }
        return false;
    };
}
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