zkoss/zk

'use strict';

module.exports = function (api) {
    api.cache(true);

    return {
        presets: [
            ['@babel/preset-env', {'modules': 'commonjs',
                "exclude": ['@babel/plugin-transform-typeof-symbol']}],
        ],
        plugins: [
            ['@babel/plugin-transform-modules-commonjs', {
                loose: true,
                strictMode: false,
            }],
            ['@babel/plugin-transform-runtime', {'corejs': 3}],
            ["@babel/plugin-proposal-decorators", { "legacy": true }],
            '@babel/plugin-proposal-class-properties',
            '@babel/plugin-proposal-object-rest-spread',
            './babel-plugin-expose-private-functions-and-variables',
        ],
        overrides: [{
            test: /[\\/]ext[\\/]//* treat as script for 3rd-party library */,
            sourceType: 'script'
        }],
        exclude: /pdfviewer\/ext/
    };
};