Use filter-obj

package.json

@@ -42,6 +42,7 @@
     "fast-deep-equal": "^2.0.1",
     "fast-glob": "^3.0.4",
     "figures": "^3.0.0",
+    "filter-obj": "^2.0.0",
     "find-up": "^4.1.0",
     "get-node": "^4.0.3",
     "get-stream": "^5.1.0",

src/bin/parse.js

@@ -1,4 +1,4 @@
-import { omitBy } from '../utils/main.js'
+import filterObj from 'filter-obj'
 
 import { normalizeDynamicOpts } from './dynamic.js'
 
@@ -10,19 +10,19 @@ export const parseOpts = function(yargs) {
 
   const optsA = normalizeDynamicOpts(opts)
 
-  const optsB = omitBy(optsA, isInternalKey)
+  const optsB = filterObj(optsA, isUserOpt)
   return [command, optsB]
 }
 
 const DEFAULT_COMMAND = 'run'
 
 // Remove `yargs`-specific options, shortcuts and dash-cased
-const isInternalKey = function(key, value) {
+const isUserOpt = function(key, value) {
   return (
-    value === undefined ||
-    INTERNAL_KEYS.includes(key) ||
-    key.length === 1 ||
-    key.includes('-')
+    value !== undefined &&
+    !INTERNAL_KEYS.includes(key) &&
+    key.length !== 1 &&
+    !key.includes('-')
   )
 }
 

src/options/main.js

@@ -2,8 +2,8 @@ import { cwd as getCwd, stderr } from 'process'
 
 import { validate, multipleValidOptions } from 'jest-validate'
 import isInteractive from 'is-interactive'
+import filterObj from 'filter-obj'
 
-import { omitBy } from '../utils/main.js'
 import { getDefaultGroup } from '../ci/info.js'
 
 import { getConfig } from './config.js'
@@ -12,7 +12,7 @@ import { preNormalizeOpts, normalizeOpts } from './normalize.js'
 
 // Retrieve options/configuration
 export const getOpts = async function(action, opts = {}) {
-  const optsA = omitBy(opts, isUndefined)
+  const optsA = filterObj(opts, isDefined)
 
   validateOpts(optsA)
 
@@ -28,8 +28,8 @@ export const getOpts = async function(action, opts = {}) {
   return optsF
 }
 
-const isUndefined = function(value) {
-  return value === undefined
+const isDefined = function(key, value) {
+  return value !== undefined
 }
 
 // We need to do this twice because configuration loading needs to have

src/run/runners/node/options.js

@@ -1,10 +1,9 @@
 import { validate } from 'jest-validate'
-
-import { omitBy } from '../../../utils/main.js'
+import filterObj from 'filter-obj'
 
 // Validate runner options
 export const getOpts = function(runOpts) {
-  const runOptsA = omitBy(runOpts, isUndefined)
+  const runOptsA = filterObj(runOpts, isDefined)
   const runOptsB = normalizeVersions(runOptsA)
 
   validate(runOptsB, { exampleConfig: EXAMPLE_OPTS })
@@ -13,8 +12,8 @@ export const getOpts = function(runOpts) {
   return runOptsC
 }
 
-const isUndefined = function(value) {
-  return value === undefined
+const isDefined = function(key, value) {
+  return value !== undefined
 }
 
 // If versions is `MAJOR` or `MAJOR.MINOR`, yargs will parse it as a number

src/utils/main.js

@@ -9,14 +9,6 @@ const omitReduce = function(object, key) {
   return objectA
 }
 
-// Like lodash _.omitBy()
-export const omitBy = function(object, condition) {
-  const pairs = Object.entries(object)
-    .filter(([key, value]) => !condition(key, value))
-    .map(([key, value]) => ({ [key]: value }))
-  return Object.assign({}, ...pairs)
-}
-
 export const isEmptyObject = function(object) {
   return Object.values(object).every(isUndefined)
 }