feat: Enable importHelpers in tsconfig to reduce output size (#378)

package.json

@@ -72,7 +72,7 @@
     "build:proto": "npx pb-gen-ts --entry-path=\"src/proto\" --out-dir=\"src/proto/generated\" --ext-in-import=\".js\"",
     "build:esm": "npx tsc",
     "build:deno": "npx cpy ./src ./deno && npx cpy ./package.json ./deno && npx replace \".js';\" \".ts';\" ./deno -r && npx replace '.js\";' '.ts\";' ./deno -r && npx replace \"'linkedom';\" \"'https://esm.sh/linkedom';\" ./deno -r && npx replace \"'jintr';\" \"'https://esm.sh/jintr';\" ./deno -r && npx replace \"new Jinter.default\" \"new Jinter\" ./deno -r",
-    "bundle:node": "npx esbuild ./dist/src/platform/node.js --bundle --target=node10 --keep-names --format=cjs --platform=node --outfile=./bundle/node.cjs --external:jintr --external:undici --external:linkedom --sourcemap --banner:js=\"/* eslint-disable */\"",
+    "bundle:node": "npx esbuild ./dist/src/platform/node.js --bundle --target=node10 --keep-names --format=cjs --platform=node --outfile=./bundle/node.cjs --external:jintr --external:undici --external:linkedom --external:tslib --sourcemap --banner:js=\"/* eslint-disable */\"",
     "bundle:browser": "npx esbuild ./dist/src/platform/web.js --banner:js=\"/* eslint-disable */\" --bundle --target=chrome58 --keep-names --format=esm --sourcemap --define:global=globalThis --outfile=./bundle/browser.js --platform=browser",
     "bundle:browser:prod": "npm run bundle:browser -- --outfile=./bundle/browser.min.js --minify",
     "prepare": "npm run build",
@@ -86,6 +86,7 @@
   "dependencies": {
     "jintr": "^0.4.1",
     "linkedom": "^0.14.12",
+    "tslib": "^2.5.0",
     "undici": "^5.19.1"
   },
   "devDependencies": {

tsconfig.json

@@ -52,7 +52,7 @@
     "outDir": "./dist",                                   /* Specify an output folder for all emitted files. */
     // "removeComments": true,                           /* Disable emitting comments. */
     // "noEmit": true,                                   /* Disable emitting files from a compilation. */
-    // "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
+    "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
     // "importsNotUsedAsValues": "remove",               /* Specify emit/checking behavior for imports that are only used for types. */
     // "downlevelIteration": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
     // "sourceRoot": "",                                 /* Specify the root path for debuggers to find the reference source code. */