diff --git a/source/lib/argument-error.ts b/source/argument-error.ts
similarity index 100%
rename from source/lib/argument-error.ts
rename to source/argument-error.ts
diff --git a/source/index.ts b/source/index.ts
index 7050e5a..276b312 100644
--- a/source/index.ts
+++ b/source/index.ts
@@ -1,10 +1,10 @@
 import callsites from 'callsites';
-import {inferLabel} from './lib/utils/infer-label';
-import {Predicate} from './lib/predicates/predicate';
-import {BasePredicate, isPredicate} from './lib/predicates/base-predicate';
+import {inferLabel} from './utils/infer-label';
+import {Predicate} from './predicates/predicate';
+import {BasePredicate, isPredicate} from './predicates/base-predicate';
 import modifiers, {Modifiers} from './modifiers';
 import predicates, {Predicates} from './predicates';
-import test from './lib/test';
+import test from './test';
 
 /**
  * @hidden
diff --git a/source/lib/operators/not.ts b/source/operators/not.ts
similarity index 100%
rename from source/lib/operators/not.ts
rename to source/operators/not.ts
diff --git a/source/predicates.ts b/source/predicates.ts
index c3b9ebd..6eef60f 100644
--- a/source/predicates.ts
+++ b/source/predicates.ts
@@ -1,17 +1,17 @@
-import {StringPredicate} from './lib/predicates/string';
-import {NumberPredicate} from './lib/predicates/number';
-import {BooleanPredicate} from './lib/predicates/boolean';
-import {Predicate, PredicateOptions} from './lib/predicates/predicate';
-import {ArrayPredicate} from './lib/predicates/array';
-import {ObjectPredicate, Shape} from './lib/predicates/object';
-import {DatePredicate} from './lib/predicates/date';
-import {ErrorPredicate} from './lib/predicates/error';
-import {MapPredicate} from './lib/predicates/map';
-import {WeakMapPredicate} from './lib/predicates/weak-map';
-import {SetPredicate} from './lib/predicates/set';
-import {WeakSetPredicate} from './lib/predicates/weak-set';
-import {BasePredicate} from './lib/predicates/base-predicate';
-import {AnyPredicate} from './lib/predicates/any';
+import {StringPredicate} from './predicates/string';
+import {NumberPredicate} from './predicates/number';
+import {BooleanPredicate} from './predicates/boolean';
+import {Predicate, PredicateOptions} from './predicates/predicate';
+import {ArrayPredicate} from './predicates/array';
+import {ObjectPredicate, Shape} from './predicates/object';
+import {DatePredicate} from './predicates/date';
+import {ErrorPredicate} from './predicates/error';
+import {MapPredicate} from './predicates/map';
+import {WeakMapPredicate} from './predicates/weak-map';
+import {SetPredicate} from './predicates/set';
+import {WeakSetPredicate} from './predicates/weak-set';
+import {BasePredicate} from './predicates/base-predicate';
+import {AnyPredicate} from './predicates/any';
 
 type TypedArray = Int8Array | Uint8Array | Uint8ClampedArray | Int16Array | Uint16Array | Int32Array | Uint32Array | Float32Array | Float64Array;
 
diff --git a/source/lib/predicates/any.ts b/source/predicates/any.ts
similarity index 96%
rename from source/lib/predicates/any.ts
rename to source/predicates/any.ts
index 85993e8..6c8c2a2 100644
--- a/source/lib/predicates/any.ts
+++ b/source/predicates/any.ts
@@ -1,6 +1,6 @@
 import {ArgumentError} from '../argument-error';
 import {BasePredicate, testSymbol} from './base-predicate';
-import {Main} from '../..';
+import {Main} from '..';
 import {PredicateOptions} from './predicate';
 
 /**
diff --git a/source/lib/predicates/array.ts b/source/predicates/array.ts
similarity index 99%
rename from source/lib/predicates/array.ts
rename to source/predicates/array.ts
index 5ef610c..37f484b 100644
--- a/source/lib/predicates/array.ts
+++ b/source/predicates/array.ts
@@ -1,5 +1,5 @@
 import isEqual from 'lodash.isequal';
-import ow from '../..';
+import ow from '..';
 import {Predicate, PredicateOptions} from './predicate';
 
 export class ArrayPredicate<T = any> extends Predicate<T[]> {
diff --git a/source/lib/predicates/base-predicate.ts b/source/predicates/base-predicate.ts
similarity index 92%
rename from source/lib/predicates/base-predicate.ts
rename to source/predicates/base-predicate.ts
index c9be36e..488c36f 100644
--- a/source/lib/predicates/base-predicate.ts
+++ b/source/predicates/base-predicate.ts
@@ -1,4 +1,4 @@
-import {Main} from '../..';
+import {Main} from '..';
 
 /**
  * @hidden
diff --git a/source/lib/predicates/boolean.ts b/source/predicates/boolean.ts
similarity index 100%
rename from source/lib/predicates/boolean.ts
rename to source/predicates/boolean.ts
diff --git a/source/lib/predicates/date.ts b/source/predicates/date.ts
similarity index 100%
rename from source/lib/predicates/date.ts
rename to source/predicates/date.ts
diff --git a/source/lib/predicates/error.ts b/source/predicates/error.ts
similarity index 100%
rename from source/lib/predicates/error.ts
rename to source/predicates/error.ts
diff --git a/source/lib/predicates/map.ts b/source/predicates/map.ts
similarity index 100%
rename from source/lib/predicates/map.ts
rename to source/predicates/map.ts
diff --git a/source/lib/predicates/number.ts b/source/predicates/number.ts
similarity index 100%
rename from source/lib/predicates/number.ts
rename to source/predicates/number.ts
diff --git a/source/lib/predicates/object.ts b/source/predicates/object.ts
similarity index 100%
rename from source/lib/predicates/object.ts
rename to source/predicates/object.ts
diff --git a/source/lib/predicates/predicate.ts b/source/predicates/predicate.ts
similarity index 99%
rename from source/lib/predicates/predicate.ts
rename to source/predicates/predicate.ts
index 9957b64..10fac3f 100644
--- a/source/lib/predicates/predicate.ts
+++ b/source/predicates/predicate.ts
@@ -1,6 +1,6 @@
 import is from '@sindresorhus/is';
-import {Main} from '../..';
 import {ArgumentError} from '../argument-error';
+import {Main} from '..';
 import {BasePredicate, testSymbol} from './base-predicate';
 import {not} from '../operators/not';
 
diff --git a/source/lib/predicates/set.ts b/source/predicates/set.ts
similarity index 100%
rename from source/lib/predicates/set.ts
rename to source/predicates/set.ts
diff --git a/source/lib/predicates/string.ts b/source/predicates/string.ts
similarity index 100%
rename from source/lib/predicates/string.ts
rename to source/predicates/string.ts
diff --git a/source/lib/predicates/weak-map.ts b/source/predicates/weak-map.ts
similarity index 100%
rename from source/lib/predicates/weak-map.ts
rename to source/predicates/weak-map.ts
diff --git a/source/lib/predicates/weak-set.ts b/source/predicates/weak-set.ts
similarity index 100%
rename from source/lib/predicates/weak-set.ts
rename to source/predicates/weak-set.ts
diff --git a/source/lib/test.ts b/source/test.ts
similarity index 100%
rename from source/lib/test.ts
rename to source/test.ts
diff --git a/source/lib/utils/has-items.ts b/source/utils/has-items.ts
similarity index 100%
rename from source/lib/utils/has-items.ts
rename to source/utils/has-items.ts
diff --git a/source/lib/utils/infer-label.ts b/source/utils/infer-label.ts
similarity index 100%
rename from source/lib/utils/infer-label.ts
rename to source/utils/infer-label.ts
diff --git a/source/lib/utils/is-valid-identifier.ts b/source/utils/is-valid-identifier.ts
similarity index 100%
rename from source/lib/utils/is-valid-identifier.ts
rename to source/utils/is-valid-identifier.ts
diff --git a/source/lib/utils/match-shape.ts b/source/utils/match-shape.ts
similarity index 98%
rename from source/lib/utils/match-shape.ts
rename to source/utils/match-shape.ts
index 7e8b2a2..234c1a5 100644
--- a/source/lib/utils/match-shape.ts
+++ b/source/utils/match-shape.ts
@@ -1,5 +1,5 @@
 import is from '@sindresorhus/is';
-import {BasePredicate} from '../..';
+import {BasePredicate} from '..';
 import test from '../test';
 import {isPredicate} from '../predicates/base-predicate';
 
diff --git a/source/lib/utils/node/fs.ts b/source/utils/node/fs.ts
similarity index 100%
rename from source/lib/utils/node/fs.ts
rename to source/utils/node/fs.ts
diff --git a/source/lib/utils/node/is-node.ts b/source/utils/node/is-node.ts
similarity index 100%
rename from source/lib/utils/node/is-node.ts
rename to source/utils/node/is-node.ts
diff --git a/source/lib/utils/node/require.ts b/source/utils/node/require.ts
similarity index 100%
rename from source/lib/utils/node/require.ts
rename to source/utils/node/require.ts
diff --git a/source/lib/utils/of-type-deep.ts b/source/utils/of-type-deep.ts
similarity index 96%
rename from source/lib/utils/of-type-deep.ts
rename to source/utils/of-type-deep.ts
index 0ec7252..81ecab7 100644
--- a/source/lib/utils/of-type-deep.ts
+++ b/source/utils/of-type-deep.ts
@@ -1,5 +1,5 @@
 import is from '@sindresorhus/is';
-import ow from '../..';
+import ow from '..';
 import {Predicate} from '../predicates/predicate';
 
 const ofTypeDeep = (input: any, predicate: Predicate): boolean => {
diff --git a/source/lib/utils/of-type.ts b/source/utils/of-type.ts
similarity index 95%
rename from source/lib/utils/of-type.ts
rename to source/utils/of-type.ts
index 6ab4867..0b5573d 100644
--- a/source/lib/utils/of-type.ts
+++ b/source/utils/of-type.ts
@@ -1,4 +1,4 @@
-import ow from '../..';
+import ow from '..';
 import {Predicate} from '../predicates/predicate';
 
 /**