remove unused babel plugins, reduce size a bit

Author: ianstormtaylor

.babelrc

@@ -4,19 +4,12 @@
     [
       "@babel/preset-env",
       {
-        "targets": {
-          "browsers": ["last 2 versions"]
-        },
+        "targets": { "browsers": "defaults, not ie 11", "node": true },
         "modules": false,
         "useBuiltIns": false,
         "loose": true
       }
     ]
   ],
-  "plugins": [
-    "babel-plugin-dev-expression",
-    "@babel/plugin-transform-modules-commonjs",
-    "@babel/plugin-proposal-object-rest-spread",
-    "@babel/plugin-proposal-class-properties"
-  ]
+  "plugins": ["@babel/plugin-transform-modules-commonjs"]
 }

config/rollup-umd-min.js

@@ -25,20 +25,13 @@ config.plugins = [
       [
         '@babel/preset-env',
         {
-          targets: {
-            browsers: ['last 2 versions'],
-          },
+          targets: { browsers: 'defaults, not ie 11' },
           modules: false,
           useBuiltIns: false,
           loose: true,
         },
       ],
     ],
-    plugins: [
-      'babel-plugin-dev-expression',
-      '@babel/plugin-proposal-object-rest-spread',
-      '@babel/plugin-proposal-class-properties',
-    ],
   }),
 
   cjs({

config/rollup.js

@@ -23,20 +23,13 @@ export default {
         [
           '@babel/preset-env',
           {
-            targets: {
-              // browsers: ['last 2 versions'],
-              node: true,
-            },
+            targets: { browsers: 'defaults, not ie 11', node: true },
             modules: false,
             useBuiltIns: false,
             loose: true,
           },
         ],
       ],
-      plugins: [
-        '@babel/plugin-proposal-object-rest-spread',
-        '@babel/plugin-proposal-class-properties',
-      ],
     }),
 
     cjs({

package.json

@@ -17,9 +17,7 @@
   "devDependencies": {
     "@babel/cli": "^7.6.3",
     "@babel/core": "^7.6.3",
-    "@babel/plugin-proposal-class-properties": "^7.5.5",
-    "@babel/plugin-proposal-object-rest-spread": "^7.6.2",
-    "@babel/plugin-transform-modules-commonjs": "^7.6.0",
+    "@babel/plugin-transform-modules-commonjs": "^7.12.1",
     "@babel/preset-env": "^7.6.3",
     "@babel/preset-typescript": "^7.6.0",
     "@babel/register": "^7.6.2",
@@ -29,7 +27,6 @@
     "@typescript-eslint/eslint-plugin": "^4.8.2",
     "@typescript-eslint/parser": "^4.8.2",
     "babel-eslint": "^10.0.3",
-    "babel-plugin-dev-expression": "^0.2.2",
     "eslint": "^7.14.0",
     "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-import": "^2.22.1",

src/error.ts

@@ -23,37 +23,23 @@ export type Failure = {
 
 export class StructError extends TypeError {
   value: any
-  key: string | number | undefined
-  type: string
-  refinement: string | undefined
-  path: Array<number | string>
-  branch: Array<any>
+  key!: string | number | undefined
+  type!: string
+  refinement!: string | undefined
+  path!: Array<number | string>
+  branch!: Array<any>
   failures: () => Array<Failure>;
   [x: string]: any
 
   constructor(failure: Failure, moreFailures: IterableIterator<Failure>) {
-    const {
-      path,
-      value,
-      key,
-      type,
-      message,
-      refinement,
-      branch,
-      ...rest
-    } = failure
+    const { message, ...rest } = failure
+    const { path } = failure
     let failures: Array<Failure> | undefined
     const msg =
       path.length === 0 ? message : `At path: ${path.join('.')} -- ${message}`
     super(msg)
     Object.assign(this, rest)
     this.name = this.constructor.name
-    this.value = value
-    this.key = key
-    this.type = type
-    this.refinement = refinement
-    this.path = path
-    this.branch = branch
     this.failures = (): Array<Failure> => {
       if (!failures) {
         failures = [failure, ...moreFailures]

src/struct.ts

@@ -23,18 +23,11 @@ export class Struct<T = unknown, S = unknown> {
     validator?: Struct<T, S>['validator']
     refiner?: Struct<T, S>['refiner']
   }) {
-    const {
-      type,
-      schema,
-      coercer = (value: unknown) => value,
-      validator = () => [],
-      refiner = () => [],
-    } = props
-    this.type = type
-    this.schema = schema
-    this.coercer = coercer
-    this.validator = validator
-    this.refiner = refiner
+    this.type = props.type
+    this.schema = props.schema
+    this.coercer = props.coercer || ((value: unknown) => value)
+    this.validator = props.validator || (() => [])
+    this.refiner = props.refiner || (() => [])
   }
 
   /**

src/utils.ts

@@ -18,9 +18,8 @@ export function isPlainObject(value: unknown): value is { [key: string]: any } {
  * Return a value as a printable string.
  */
 
-export function print(value: any, ticks?: string): string {
-  const string = typeof value === 'string' ? JSON.stringify(value) : `${value}`
-  return ticks ? `${ticks}${string}${ticks}` : string
+export function print(value: any): string {
+  return typeof value === 'string' ? JSON.stringify(value) : `${value}`
 }
 
 /**