make adaptive expression library compatible with IE

libraries/adaptive-expressions-ie11/babel.config.js

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+module.exports = function (api) {
+    api.cache(false);
+    const presets = [
+        ['@babel/preset-typescript'],
+        [
+            '@babel/preset-env',
+            {
+                corejs: { version: 3 },
+                useBuiltIns: 'usage',
+                targets: {
+                    browsers: ['last 2 versions', 'ie >= 11', 'not ie < 11', 'not android > 0', 'not ios > 0'],
+                },
+            },
+        ],
+    ];
+    // These plugins are used to apply transformation to the compiled code,
+    // like converting class or method decorators to appropriate js code. Please
+    // check individual plugin documentation for more details.
+    const plugins = [
+        ['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true }],
+        ['@babel/plugin-proposal-class-properties'],
+        ['@babel/plugin-transform-modules-commonjs'],
+        ['@babel/plugin-transform-runtime', { useESModules: false }],
+    ];
+    return {
+        presets,
+        plugins,
+    };
+};

libraries/adaptive-expressions-ie11/package.json

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+{
+  "name": "adaptive-expressions-ie11",
+  "author": "Microsoft Corp.",
+  "description": "Common Expression Language",
+  "version": "4.1.6",
+  "license": "MIT",
+  "keywords": [
+    "botbuilder",
+    "botframework",
+    "expression"
+  ],
+  "bugs": {
+    "url": "https://github.com/Microsoft/botbuilder-js/issues"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Microsoft/botbuilder-js.git"
+  },
+  "main": "./dist/index.js",
+  "typings": "./dist/index.d.ts",
+  "dependencies": {
+    "adaptive-expressions": "4.1.6",
+    "core-js": "^3.3.2"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.6.4",
+    "@babel/plugin-proposal-class-properties": "^7.5.5",
+    "@babel/plugin-proposal-decorators": "^7.6.0",
+    "@babel/plugin-transform-runtime": "^7.6.2",
+    "@babel/preset-env": "^7.6.3",
+    "@babel/preset-typescript": "^7.6.0",
+    "@babel/runtime": "^7.6.3",
+    "@types/node": "^10.17.27",
+    "babel-loader": "^8.0.6",
+    "copyfiles": "2.4.0",
+    "ts-loader": "^7.0.5",
+    "typescript": "3.5.3",
+    "webpack": "^4.43.0",
+    "webpack-cli": "^3.3.12"
+  },
+  "scripts": {
+    "build": "webpack && copyfiles -u 3 node_modules/adaptive-expressions/lib/**/*.d.ts dist",
+    "clean": "erase /q /s .\\dist",
+    "set-version": "npm version --allow-same-version ${Version}"
+  },
+  "files": [
+    "src",
+    "dist"
+  ]
+}

libraries/adaptive-expressions-ie11/src/index.ts

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+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+export * from 'adaptive-expressions';

libraries/adaptive-expressions-ie11/tsconfig.json

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+{
+    "extends": "../adaptive-expressions/tsconfig.json",
+    "compilerOptions": {
+      "target": "es5",
+      "outDir": "./dist",
+      "rootDir": "./src"
+      },
+    "include": [
+      "src/**/*"
+    ]
+  }

libraries/adaptive-expressions-ie11/webpack.config.js

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+const path = require('path');
+
+module.exports = (env, argv) => {
+    return {
+        mode: 'none',
+        entry: path.resolve(__dirname, './src/index.ts'),
+        output: {
+            path: path.resolve(__dirname, './dist'),
+            libraryTarget: 'amd',
+            filename: 'index.js',
+        },
+        devtool: 'none',
+        resolve: {
+            extensions: ['.ts', '.js'],
+        },
+        module: {
+            rules: [
+                {
+                    test: /\.tsx?$/,
+                    loader: 'ts-loader',
+                    include: path.resolve(__dirname, './src'),
+                },
+                {
+                    test: /\.js$/,
+                    use: [
+                        {
+                            loader: 'babel-loader',
+                        },
+                    ],
+                    include: [
+                        path.resolve(__dirname, './node_modules/adaptive-expressions'),
+                        path.resolve(
+                            __dirname,
+                            './node_modules/@microsoft/recognizers-text-data-types-timex-expression'
+                        ),
+                        path.resolve(__dirname, './node_modules/antlr4ts'),
+                        path.resolve(__dirname, './node_modules/lru-cache'),
+                        path.resolve(__dirname, './node_modules/yallist'),
+                    ],
+                },
+            ],
+        },
+    };
+};