Remove redundant "use strict" directive as ES2015 modules are implicitly in strict mode.

86 files changed, 0 insertions, 172 deletions

diff --git a/lib/apply.js b/lib/apply.js
index 0c3c33d..1cf7cb3 100644
--- a/lib/apply.js
+++ b/lib/apply.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import rest from 'lodash/rest';
 
 /**
diff --git a/lib/applyEach.js b/lib/applyEach.js
index d807e04..3337f57 100644
--- a/lib/applyEach.js
+++ b/lib/applyEach.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import applyEach from './internal/applyEach';
 import map from './map';
 
diff --git a/lib/applyEachSeries.js b/lib/applyEachSeries.js
index 675a029..0a01891 100644
--- a/lib/applyEachSeries.js
+++ b/lib/applyEachSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import applyEach from './internal/applyEach';
 import mapSeries from './mapSeries';
 
diff --git a/lib/asyncify.js b/lib/asyncify.js
index 98ff5ce..e3f6f87 100644
--- a/lib/asyncify.js
+++ b/lib/asyncify.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import isObject from 'lodash/isObject';
 import initialParams from './internal/initialParams';
 
diff --git a/lib/auto.js b/lib/auto.js
index 750a564..6821e12 100644
--- a/lib/auto.js
+++ b/lib/auto.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import arrayEach from 'lodash/_arrayEach';
 import forOwn from 'lodash/forOwn';
 import indexOf from 'lodash/_baseIndexOf';
diff --git a/lib/cargo.js b/lib/cargo.js
index a2fe98e..01329e7 100644
--- a/lib/cargo.js
+++ b/lib/cargo.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import queue from './internal/queue';
 
 /**
diff --git a/lib/compose.js b/lib/compose.js
index 9c954d0..441d5ab 100644
--- a/lib/compose.js
+++ b/lib/compose.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import seq from './seq';
 
 var reverse = Array.prototype.reverse;
diff --git a/lib/concat.js b/lib/concat.js
index 176cb97..be7410d 100644
--- a/lib/concat.js
+++ b/lib/concat.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import concat from './internal/concat';
 import doParallel from './internal/doParallel';
 
diff --git a/lib/concatSeries.js b/lib/concatSeries.js
index 73312dc..fef87b7 100644
--- a/lib/concatSeries.js
+++ b/lib/concatSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import concat from './internal/concat';
 import doSeries from './internal/doSeries';
 
diff --git a/lib/constant.js b/lib/constant.js
index 350a905..a5e32fa 100644
--- a/lib/constant.js
+++ b/lib/constant.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import rest from 'lodash/rest';
 import initialParams from './internal/initialParams';
 
diff --git a/lib/detect.js b/lib/detect.js
index 0b06374..a4e246c 100644
--- a/lib/detect.js
+++ b/lib/detect.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import identity from 'lodash/identity';
 
 import createTester from './internal/createTester';
diff --git a/lib/detectLimit.js b/lib/detectLimit.js
index 20c8040..2e8ba7a 100644
--- a/lib/detectLimit.js
+++ b/lib/detectLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import identity from 'lodash/identity';
 
 import createTester from './internal/createTester';
diff --git a/lib/detectSeries.js b/lib/detectSeries.js
index 659d820..59b34a5 100644
--- a/lib/detectSeries.js
+++ b/lib/detectSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import identity from 'lodash/identity';
 
 import createTester from './internal/createTester';
diff --git a/lib/dir.js b/lib/dir.js
index 70bd4e2..8b467af 100644
--- a/lib/dir.js
+++ b/lib/dir.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import consoleFunc from './internal/consoleFunc';
 
 /**
diff --git a/lib/doDuring.js b/lib/doDuring.js
index 76050ab..21560a5 100644
--- a/lib/doDuring.js
+++ b/lib/doDuring.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import during from './during';
 
 /**
diff --git a/lib/doUntil.js b/lib/doUntil.js
index 4e6bbc3..d823135 100644
--- a/lib/doUntil.js
+++ b/lib/doUntil.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import doWhilst from './doWhilst';
 
 /**
diff --git a/lib/doWhilst.js b/lib/doWhilst.js
index b38036b..c23fe8d 100644
--- a/lib/doWhilst.js
+++ b/lib/doWhilst.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import whilst from './whilst';
 
 /**
diff --git a/lib/during.js b/lib/during.js
index de3b1a1..459e144 100644
--- a/lib/during.js
+++ b/lib/during.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import noop from 'lodash/noop';
 import rest from 'lodash/rest';
 
diff --git a/lib/each.js b/lib/each.js
index f2c9929..90ba3ee 100644
--- a/lib/each.js
+++ b/lib/each.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachLimit from './eachLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/eachLimit.js b/lib/eachLimit.js
index 415e6e8..0b46c0b 100644
--- a/lib/eachLimit.js
+++ b/lib/eachLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachOfLimit from './internal/eachOfLimit';
 import withoutIndex from './internal/withoutIndex';
 
diff --git a/lib/eachOf.js b/lib/eachOf.js
index 5bb82e4..1defd47 100644
--- a/lib/eachOf.js
+++ b/lib/eachOf.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachOfLimit from './eachOfLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/eachOfLimit.js b/lib/eachOfLimit.js
index 753dbc0..d86dd9c 100644
--- a/lib/eachOfLimit.js
+++ b/lib/eachOfLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import _eachOfLimit from './internal/eachOfLimit';
 
 /**
diff --git a/lib/eachOfSeries.js b/lib/eachOfSeries.js
index 0718805..dee4838 100644
--- a/lib/eachOfSeries.js
+++ b/lib/eachOfSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachOfLimit from './eachOfLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/eachSeries.js b/lib/eachSeries.js
index 470c34c..3d8af62 100644
--- a/lib/eachSeries.js
+++ b/lib/eachSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachLimit from './eachLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/ensureAsync.js b/lib/ensureAsync.js
index 62bb5ef..55d59fe 100644
--- a/lib/ensureAsync.js
+++ b/lib/ensureAsync.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import setImmediate from './internal/setImmediate';
 import initialParams from './internal/initialParams';
 
diff --git a/lib/every.js b/lib/every.js
index df28b00..a2377ea 100644
--- a/lib/every.js
+++ b/lib/every.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import everyLimit from './everyLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/everyLimit.js b/lib/everyLimit.js
index 6470261..7d2b042 100644
--- a/lib/everyLimit.js
+++ b/lib/everyLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import createTester from './internal/createTester';
 import eachOfLimit from './eachOfLimit';
 import notId from './internal/notId';
diff --git a/lib/everySeries.js b/lib/everySeries.js
index aca6cec..24ee4ed 100644
--- a/lib/everySeries.js
+++ b/lib/everySeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import everyLimit from './everyLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/filter.js b/lib/filter.js
index f350938..7f48ae1 100644
--- a/lib/filter.js
+++ b/lib/filter.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import filterLimit from './filterLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/filterLimit.js b/lib/filterLimit.js
index 414ea4d..615b170 100644
--- a/lib/filterLimit.js
+++ b/lib/filterLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import filter from './internal/filter';
 import doParallelLimit from './internal/doParallelLimit';
 
diff --git a/lib/filterSeries.js b/lib/filterSeries.js
index 97c3907..6fde694 100644
--- a/lib/filterSeries.js
+++ b/lib/filterSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import filterLimit from './filterLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/forever.js b/lib/forever.js
index 23f261b..37fae48 100644
--- a/lib/forever.js
+++ b/lib/forever.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import noop from 'lodash/noop';
 
 import onlyOnce from './internal/onlyOnce';
diff --git a/lib/index.js b/lib/index.js
index 1f41361..1180dcf 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,5 +1,3 @@
-'use strict';
-
 /**
  * Async is a utility module which provides straight-forward, powerful functions
  * for working with asynchronous JavaScript. Although originally designed for
diff --git a/lib/internal/applyEach.js b/lib/internal/applyEach.js
index d472683..50c359e 100644
--- a/lib/internal/applyEach.js
+++ b/lib/internal/applyEach.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import rest from 'lodash/rest';
 import initialParams from './initialParams';
 
diff --git a/lib/internal/concat.js b/lib/internal/concat.js
index 482ad3a..a55de2e 100644
--- a/lib/internal/concat.js
+++ b/lib/internal/concat.js
@@ -1,5 +1,3 @@
-'use strict';
-
 export default function concat(eachfn, arr, fn, callback) {
     var result = [];
     eachfn(arr, function (x, index, cb) {
diff --git a/lib/internal/consoleFunc.js b/lib/internal/consoleFunc.js
index fd8130d..ee4f1f1 100644
--- a/lib/internal/consoleFunc.js
+++ b/lib/internal/consoleFunc.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import arrayEach from 'lodash/_arrayEach';
 import rest from 'lodash/rest';
 
diff --git a/lib/internal/doLimit.js b/lib/internal/doLimit.js
index 61a609f..7d2f111 100644
--- a/lib/internal/doLimit.js
+++ b/lib/internal/doLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 export default function doLimit(fn, limit) {
     return function (iterable, iteratee, callback) {
         return fn(iterable, limit, iteratee, callback);
diff --git a/lib/internal/doParallel.js b/lib/internal/doParallel.js
index 0d08bae..d436208 100644
--- a/lib/internal/doParallel.js
+++ b/lib/internal/doParallel.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachOf from '../eachOf';
 
 export default function doParallel(fn) {
diff --git a/lib/internal/doParallelLimit.js b/lib/internal/doParallelLimit.js
index 3f17510..b29da51 100644
--- a/lib/internal/doParallelLimit.js
+++ b/lib/internal/doParallelLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachOfLimit from './eachOfLimit';
 
 export default function doParallelLimit(fn) {
diff --git a/lib/internal/doSeries.js b/lib/internal/doSeries.js
index 0a0f3bd..96e21ca 100644
--- a/lib/internal/doSeries.js
+++ b/lib/internal/doSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachOfSeries from '../eachOfSeries';
 
 export default function doSeries(fn) {
diff --git a/lib/internal/eachOfLimit.js b/lib/internal/eachOfLimit.js
index b5ed217..15dba57 100644
--- a/lib/internal/eachOfLimit.js
+++ b/lib/internal/eachOfLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import noop from 'lodash/noop';
 import once from './once';
 
diff --git a/lib/internal/filter.js b/lib/internal/filter.js
index a8c883b..aa5580c 100644
--- a/lib/internal/filter.js
+++ b/lib/internal/filter.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import arrayMap from 'lodash/_arrayMap';
 import property from 'lodash/_baseProperty';
 
diff --git a/lib/internal/findGetResult.js b/lib/internal/findGetResult.js
index 3aeb07d..7345df6 100644
--- a/lib/internal/findGetResult.js
+++ b/lib/internal/findGetResult.js
@@ -1,5 +1,3 @@
-'use strict';
-
 export default function _findGetResult(v, x) {
     return x;
 }
diff --git a/lib/internal/iterator.js b/lib/internal/iterator.js
index 8b233e1..645dcbd 100644
--- a/lib/internal/iterator.js
+++ b/lib/internal/iterator.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import isArrayLike from 'lodash/isArrayLike';
 import getIterator from './getIterator';
 import keys from 'lodash/keys';
diff --git a/lib/internal/map.js b/lib/internal/map.js
index 959138d..45c3eae 100644
--- a/lib/internal/map.js
+++ b/lib/internal/map.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import isArrayLike from 'lodash/isArrayLike';
 import getIterator from './getIterator';
 import noop from 'lodash/noop';
diff --git a/lib/internal/notId.js b/lib/internal/notId.js
index d936aab..65a676e 100644
--- a/lib/internal/notId.js
+++ b/lib/internal/notId.js
@@ -1,5 +1,3 @@
-'use strict';
-
 export default function notId(v) {
     return !v;
 }
diff --git a/lib/internal/onlyOnce.js b/lib/internal/onlyOnce.js
index 355ff41..bb1979a 100644
--- a/lib/internal/onlyOnce.js
+++ b/lib/internal/onlyOnce.js
@@ -1,5 +1,3 @@
-'use strict';
-
 export default function onlyOnce(fn) {
     return function() {
         if (fn === null) throw new Error("Callback was already called.");
diff --git a/lib/internal/parallel.js b/lib/internal/parallel.js
index 52b0303..f835365 100644
--- a/lib/internal/parallel.js
+++ b/lib/internal/parallel.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import noop from 'lodash/noop';
 import isArrayLike from 'lodash/isArrayLike';
 import rest from 'lodash/rest';
diff --git a/lib/internal/queue.js b/lib/internal/queue.js
index 9a1f77f..678cee1 100644
--- a/lib/internal/queue.js
+++ b/lib/internal/queue.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import arrayEach from 'lodash/_arrayEach';
 import arrayMap from 'lodash/_arrayMap';
 import isArray from 'lodash/isArray';
diff --git a/lib/internal/reject.js b/lib/internal/reject.js
index 4a22a4e..b6d7343 100644
--- a/lib/internal/reject.js
+++ b/lib/internal/reject.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import filter from './filter';
 
 export default function reject(eachfn, arr, iteratee, callback) {
diff --git a/lib/internal/withoutIndex.js b/lib/internal/withoutIndex.js
index 8cfbfa6..2d70dd4 100644
--- a/lib/internal/withoutIndex.js
+++ b/lib/internal/withoutIndex.js
@@ -1,5 +1,3 @@
-'use strict';
-
 export default function _withoutIndex(iteratee) {
     return function (value, index, callback) {
         return iteratee(value, callback);
diff --git a/lib/iterator.js b/lib/iterator.js
index 7d1b0f9..b37c18a 100644
--- a/lib/iterator.js
+++ b/lib/iterator.js
@@ -1,5 +1,3 @@
-'use strict';
-
 /**
  * Creates an iterator function which calls the next function in the `tasks`
  * array, returning a continuation to call the next one after that. It's also
diff --git a/lib/log.js b/lib/log.js
index 467cd17..b18733e 100644
--- a/lib/log.js
+++ b/lib/log.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import consoleFunc from './internal/consoleFunc';
 
 /**
diff --git a/lib/map.js b/lib/map.js
index b7ccdd4..892456b 100644
--- a/lib/map.js
+++ b/lib/map.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import mapLimit from './mapLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/mapLimit.js b/lib/mapLimit.js
index 916b206..0cf049b 100644
--- a/lib/mapLimit.js
+++ b/lib/mapLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import doParallelLimit from './internal/doParallelLimit';
 import map from './internal/map';
 
diff --git a/lib/mapSeries.js b/lib/mapSeries.js
index efa2818..c241bef 100644
--- a/lib/mapSeries.js
+++ b/lib/mapSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import mapLimit from './mapLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/memoize.js b/lib/memoize.js
index 955f709..60c1f54 100644
--- a/lib/memoize.js
+++ b/lib/memoize.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import identity from 'lodash/identity';
 import rest from 'lodash/rest';
 
diff --git a/lib/nextTick.js b/lib/nextTick.js
index 249bec2..66a4c1f 100644
--- a/lib/nextTick.js
+++ b/lib/nextTick.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import setImmediate from './internal/setImmediate';
 
 /**
diff --git a/lib/parallel.js b/lib/parallel.js
index eb910ce..5a01b5f 100644
--- a/lib/parallel.js
+++ b/lib/parallel.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import parallelLimit from './parallelLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/parallelLimit.js b/lib/parallelLimit.js
index 5b62150..6d400d7 100644
--- a/lib/parallelLimit.js
+++ b/lib/parallelLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachOfLimit from './internal/eachOfLimit';
 import parallel from './internal/parallel';
 
diff --git a/lib/priorityQueue.js b/lib/priorityQueue.js
index 0d8fd93..36cacaf 100644
--- a/lib/priorityQueue.js
+++ b/lib/priorityQueue.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import arrayEach from 'lodash/_arrayEach';
 import isArray from 'lodash/isArray';
 import noop from 'lodash/noop';
diff --git a/lib/queue.js b/lib/queue.js
index 683f227..24b187e 100644
--- a/lib/queue.js
+++ b/lib/queue.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import queue from './internal/queue';
 
 /**
diff --git a/lib/race.js b/lib/race.js
index f797b85..0cead40 100644
--- a/lib/race.js
+++ b/lib/race.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import isArray from 'lodash/isArray';
 import each from 'lodash/each';
 import noop from 'lodash/noop';
diff --git a/lib/reduce.js b/lib/reduce.js
index 2aa516b..1d85ebe 100644
--- a/lib/reduce.js
+++ b/lib/reduce.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import eachOfSeries from './eachOfSeries';
 
 /**
diff --git a/lib/reduceRight.js b/lib/reduceRight.js
index 033b9da..eb3d78f 100644
--- a/lib/reduceRight.js
+++ b/lib/reduceRight.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import reduce from './reduce';
 
 var slice = Array.prototype.slice;
diff --git a/lib/reflectAll.js b/lib/reflectAll.js
index b6884cc..ac9ea06 100644
--- a/lib/reflectAll.js
+++ b/lib/reflectAll.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import reflect from './reflect';
 
 /**
diff --git a/lib/reject.js b/lib/reject.js
index f7f6f10..f4c7a45 100644
--- a/lib/reject.js
+++ b/lib/reject.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import rejectLimit from './rejectLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/rejectLimit.js b/lib/rejectLimit.js
index 9b3fbd3..a8e2082 100644
--- a/lib/rejectLimit.js
+++ b/lib/rejectLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import reject from './internal/reject';
 import doParallelLimit from './internal/doParallelLimit';
 
diff --git a/lib/rejectSeries.js b/lib/rejectSeries.js
index 1732eca..8fc7a41 100644
--- a/lib/rejectSeries.js
+++ b/lib/rejectSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import rejectLimit from './rejectLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/retry.js b/lib/retry.js
index 633b418..3aa4b6a 100644
--- a/lib/retry.js
+++ b/lib/retry.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import series from './series';
 import noop from 'lodash/noop';
 import constant from 'lodash/constant';
diff --git a/lib/seq.js b/lib/seq.js
index ec1f10c..a82ca5c 100644
--- a/lib/seq.js
+++ b/lib/seq.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import noop from 'lodash/noop';
 import rest from 'lodash/rest';
 import reduce from './reduce';
diff --git a/lib/series.js b/lib/series.js
index 17392cd..72034e9 100644
--- a/lib/series.js
+++ b/lib/series.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import parallel from './internal/parallel';
 import eachOfSeries from './eachOfSeries';
 
diff --git a/lib/setImmediate.js b/lib/setImmediate.js
index 8bd57c3..68f94d7 100644
--- a/lib/setImmediate.js
+++ b/lib/setImmediate.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import setImmediate from './internal/setImmediate';
 
 /**
diff --git a/lib/some.js b/lib/some.js
index ccae178..4f4e2b1 100644
--- a/lib/some.js
+++ b/lib/some.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import someLimit from './someLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/someLimit.js b/lib/someLimit.js
index 521c116..50beb65 100644
--- a/lib/someLimit.js
+++ b/lib/someLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import createTester from './internal/createTester';
 import eachOfLimit from './eachOfLimit';
 import identity from 'lodash/identity';
diff --git a/lib/someSeries.js b/lib/someSeries.js
index 41ca733..18fd5ca 100644
--- a/lib/someSeries.js
+++ b/lib/someSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import someLimit from './someLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/sortBy.js b/lib/sortBy.js
index 3e98bf0..6dfad9b 100644
--- a/lib/sortBy.js
+++ b/lib/sortBy.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import arrayMap from 'lodash/_arrayMap';
 import property from 'lodash/_baseProperty';
 
diff --git a/lib/timeout.js b/lib/timeout.js
index f6f3893..1d19643 100644
--- a/lib/timeout.js
+++ b/lib/timeout.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import initialParams from './internal/initialParams';
 
 /**
diff --git a/lib/times.js b/lib/times.js
index 8b4bb2b..1d5b6c3 100644
--- a/lib/times.js
+++ b/lib/times.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import timesLimit from './timesLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/timesLimit.js b/lib/timesLimit.js
index a6ac311..5e8e52f 100644
--- a/lib/timesLimit.js
+++ b/lib/timesLimit.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import mapLimit from './mapLimit';
 import range from 'lodash/_baseRange';
 
diff --git a/lib/timesSeries.js b/lib/timesSeries.js
index a610b11..28a5434 100644
--- a/lib/timesSeries.js
+++ b/lib/timesSeries.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import timesLimit from './timesLimit';
 import doLimit from './internal/doLimit';
 
diff --git a/lib/transform.js b/lib/transform.js
index cdad526..1c20fce 100644
--- a/lib/transform.js
+++ b/lib/transform.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import isArray from 'lodash/isArray';
 
 import eachOf from './eachOf';
diff --git a/lib/unmemoize.js b/lib/unmemoize.js
index 6b7a6f7..676e7c0 100644
--- a/lib/unmemoize.js
+++ b/lib/unmemoize.js
@@ -1,5 +1,3 @@
-'use strict';
-
 /**
  * Undoes a {@link async.memoize}d function, reverting it to the original,
  * unmemoized form. Handy for testing.
diff --git a/lib/until.js b/lib/until.js
index f5e6efa..cce9432 100644
--- a/lib/until.js
+++ b/lib/until.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import whilst from './whilst';
 
 /**
diff --git a/lib/waterfall.js b/lib/waterfall.js
index c76b332..62bbdfe 100644
--- a/lib/waterfall.js
+++ b/lib/waterfall.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import isArray from 'lodash/isArray';
 import noop from 'lodash/noop';
 import once from './internal/once';
diff --git a/lib/whilst.js b/lib/whilst.js
index 00c510c..079fd85 100644
--- a/lib/whilst.js
+++ b/lib/whilst.js
@@ -1,5 +1,3 @@
-'use strict';
-
 import noop from 'lodash/noop';
 import rest from 'lodash/rest';