Upgrading lib dependencies and node.js version

.eslintrc

@@ -2,7 +2,7 @@
   "env": {
     "browser": true,
     "commonjs": true,
-    "es6": true,
+    "es2021": true,
     "node": true,
     "jest": true
   },
@@ -11,26 +11,24 @@
     "eslint:recommended",
     "plugin:@typescript-eslint/recommended",
     "plugin:prettier/recommended",
-    "prettier",
-    "prettier/@typescript-eslint"
+    "prettier"
   ],
   "plugins": [
     "import"
   ],
   "parserOptions": {
     "project": "tsconfig.json",
-    "sourceType": "module",
-    "ecmaVersion": 2020
+    "sourceType": "module"
   },
   "rules": {
     "linebreak-style": ["error", "unix"],
     "no-empty": 1,
-    "no-undef": 0,
     "no-useless-catch": 1,
     "no-prototype-builtins": 1,
     "no-constant-condition": 0,
     "no-useless-escape" : 0,
     "no-console": "error",
+    "require-yield": 0,
     "eqeqeq": ["error", "smart"],
     "spaced-comment": [
       "warn",
@@ -121,6 +119,12 @@
         "leadingUnderscore": "allow",
         "trailingUnderscore": "allowSingleOrDouble"
       },
+      {
+        "selector": "function",
+        "format": ["camelCase", "PascalCase"],
+        "leadingUnderscore": "allow",
+        "trailingUnderscore": "allowSingleOrDouble"
+      },
       {
         "selector": "variable",
         "format": ["camelCase", "UPPER_CASE", "PascalCase"],

.npmignore

@@ -13,3 +13,4 @@
 /benches
 /build
 /builds
+/dist/tsbuildinfo

default.nix

@@ -1,5 +1,6 @@
 { runCommandNoCC
 , callPackage
+, jq
 }:
 
 let
@@ -32,11 +33,25 @@ let
         "${utils.node2nixProd}/lib/node_modules" \
         "$out/lib/node_modules/$packageName/"
     fi
-    # create symlink to the deployed executable folder, if applicable
-    if [ -d "${utils.node2nixDev}/lib/node_modules/.bin" ]; then
-      cp -r ${utils.node2nixDev}/lib/node_modules/.bin $out/lib/node_modules/
-      ln -s $out/lib/node_modules/.bin $out/bin
+    # symlink bin executables
+    if [ \
+      "$(${jq}/bin/jq 'has("bin")' "$out/lib/node_modules/${utils.node2nixDev.packageName}/package.json")" \
+      == \
+      "true" \
+    ]; then
+      mkdir -p "$out/bin"
+      while IFS= read -r bin_name && IFS= read -r bin_path; do
+        # make files executable
+        chmod a+x "$out/lib/node_modules/${utils.node2nixDev.packageName}/$bin_path"
+        # create the symlink
+        ln -s \
+          "../lib/node_modules/${utils.node2nixDev.packageName}/$bin_path" \
+          "$out/bin/$bin_name"
+      done < <(
+        ${jq}/bin/jq -r 'select(.bin != null) | .bin | to_entries[] | (.key, .value)' \
+        "$out/lib/node_modules/${utils.node2nixDev.packageName}/package.json"
+      )
     fi
-  '';
+    '';
 in
   drv

jest.config.js

@@ -2,7 +2,7 @@ const os = require('os');
 const path = require('path');
 const fs = require('fs');
 const process = require('process');
-const { pathsToModuleNameMapper } = require('ts-jest/utils');
+const { pathsToModuleNameMapper } = require('ts-jest');
 const { compilerOptions } = require('./tsconfig');
 
 const moduleNameMapper = pathsToModuleNameMapper(compilerOptions.paths, {