javascript-obfuscator/src/custom-nodes/self-defending-nodes/SelfDefendingUnicodeNode.ts

import * as ESTree from 'estree';

import { TNodeWithBlockStatement } from '../../types/TNodeWithBlockStatement';

import { AppendState } from '../../enums/AppendState';

import { NO_CUSTOM_NODES_PRESET } from '../../preset-options/NoCustomNodesPreset';

import { SelfDefendingTemplate } from '../../templates/custom-nodes/self-defending-nodes/self-defending-unicode-node/SelfDefendingTemplate';

import { AbstractCustomNode } from '../AbstractCustomNode';
import { JavaScriptObfuscator } from '../../JavaScriptObfuscator';
import { NodeUtils } from '../../NodeUtils';
import { HiddenNodeAppender } from '../../hidden-node-appender/HiddenNodeAppender';

export class SelfDefendingUnicodeNode extends AbstractCustomNode {
    /**
     * @type {AppendState}
     */
    protected appendState: AppendState = AppendState.AfterObfuscation;

    /**
     * @param blockScopeNode
     */
    public appendNode (blockScopeNode: TNodeWithBlockStatement): void {
        HiddenNodeAppender.appendNode(
            blockScopeNode.body,
            this.getNode(),
            HiddenNodeAppender.getIndexByThreshold(blockScopeNode.body.length)
        );
    }

    /**
     * @returns {ESTree.Node}
     */
    protected getNodeStructure (): ESTree.Node {
        return NodeUtils.convertCodeToStructure(
            JavaScriptObfuscator.obfuscate(
                SelfDefendingTemplate(),
                NO_CUSTOM_NODES_PRESET
            ).getObfuscatedCode()
        );
    }
}