docs: update README examples to use const and let

Author: Planeshifter

lib/node_modules/@stdlib/random/iter/arcsine/README.md

@@ -27,18 +27,18 @@ limitations under the License.
 ## Usage
 
 ```javascript
-var iterator = require( '@stdlib/random/iter/arcsine' );
+const iterator = require( '@stdlib/random/iter/arcsine' );
 ```
 
 #### iterator( a, b\[, options] )
 
 Returns an iterator for generating pseudorandom numbers drawn from an [arcsine][arcsine] distribution with parameters `a` (minimum support) and `b` (maximum support).
 
 ```javascript
-var it = iterator( 2.0, 5.0 );
+const it = iterator( 2.0, 5.0 );
 // returns <Object>
 
-var r = it.next().value;
+let r = it.next().value;
 // returns <number>
 
 r = it.next().value;
@@ -61,71 +61,65 @@ The function accepts the following `options`:
 To use a custom PRNG as the underlying source of uniformly distributed pseudorandom numbers, set the `prng` option.
 
 ```javascript
-var minstd = require( '@stdlib/random/base/minstd' );
+const minstd = require( '@stdlib/random/base/minstd' );
 
-var it = iterator( 2.0, 4.0, {
+const it = iterator( 2.0, 4.0, {
     'prng': minstd.normalized
 });
 
-var r = it.next().value;
+const r = it.next().value;
 // returns <number>
 ```
 
 To return an iterator having a specific initial state, set the iterator `state` option.
 
 ```javascript
-var bool;
-var it1;
-var it2;
-var r;
-var i;
-
-it1 = iterator( 2.0, 4.0 );
+const it1 = iterator( 2.0, 4.0 );
 
 // Generate pseudorandom numbers, thus progressing the generator state:
-for ( i = 0; i < 1000; i++ ) {
-    r = it1.next().value;
+for ( let i = 0; i < 1000; i++ ) {
+    const r = it1.next().value;
 }
 
 // Create a new iterator initialized to the current state of `it1`:
-it2 = iterator( 2.0, 4.0, {
+const it2 = iterator( 2.0, 4.0, {
     'state': it1.state
 });
 
 // Test that the generated pseudorandom numbers are the same:
-bool = ( it1.next().value === it2.next().value );
+const bool = ( it1.next().value === it2.next().value );
 // returns true
 ```
 
 To seed the iterator, set the `seed` option.
 
 ```javascript
-var it1 = iterator( 2.0, 4.0, {
+const it1 = iterator( 2.0, 4.0, {
     'seed': 12345
 });
 
-var r1 = it1.next().value;
+const r1 = it1.next().value;
 // returns <number>
 
-var it2 = iterator( 2.0, 4.0, {
+const it2 = iterator( 2.0, 4.0, {
     'seed': 12345
 });
 
-var r2 = it2.next().value;
+const r2 = it2.next().value;
 // returns <number>
 
-var bool = ( r1 === r2 );
+const bool = ( r1 === r2 );
 // returns true
 ```
 
 To limit the number of iterations, set the `iter` option.
 
 ```javascript
-var it = iterator( 2.0, 4.0, {
+const it = iterator( 2.0, 4.0, {
     'iter': 2
 });
 
-var r = it.next().value;
+let r = it.next().value;
 // returns <number>
 
 r = it.next().value;
@@ -169,20 +163,17 @@ The returned iterator protocol-compliant object has the following properties:
 <!-- eslint no-undef: "error" -->
 
 ```javascript
-var iterator = require( '@stdlib/random/iter/arcsine' );
-
-var it;
-var r;
+const iterator = require( '@stdlib/random/iter/arcsine' );
 
 // Create a seeded iterator for generating pseudorandom numbers:
-it = iterator( 2.0, 5.0, {
+const it = iterator( 2.0, 5.0, {
     'seed': 1234,
     'iter': 10
 });
 
 // Perform manual iteration...
 while ( true ) {
-    r = it.next();
+    const r = it.next();
     if ( r.done ) {
         break;
     }

lib/node_modules/@stdlib/random/iter/bernoulli/README.md

@@ -27,18 +27,18 @@ limitations under the License.
 ## Usage
 
 ```javascript
-var iterator = require( '@stdlib/random/iter/bernoulli' );
+const iterator = require( '@stdlib/random/iter/bernoulli' );
 ```
 
 #### iterator( p\[, options] )
 
 Returns an iterator for generating pseudorandom numbers drawn from a [Bernoulli][bernoulli] distribution with success probability `p`.
 
 ```javascript
-var it = iterator( 0.3 );
+const it = iterator( 0.3 );
 // returns <Object>
 
-var r = it.next().value;
+let r = it.next().value;
 // returns <number>
 
 r = it.next().value;
@@ -55,7 +55,7 @@ If `p < 0` or `p > 1`, the function throws an error.
 <!-- run throws: true -->
 
 ```javascript
-var it = iterator( 1.2 );
+const it = iterator( 1.2 );
 // throws <TypeError>
 ```
 
@@ -70,71 +70,65 @@ The function accepts the following `options`:
 To use a custom PRNG as the underlying source of uniformly distributed pseudorandom numbers, set the `prng` option.
 
 ```javascript
-var minstd = require( '@stdlib/random/base/minstd' );
+const minstd = require( '@stdlib/random/base/minstd' );
 
-var it = iterator( 0.5, {
+const it = iterator( 0.5, {
     'prng': minstd.normalized
 });
 
-var r = it.next().value;
+const r = it.next().value;
 // returns <number>
 ```
 
 To return an iterator having a specific initial state, set the iterator `state` option.
 
 ```javascript
-var bool;
-var it1;
-var it2;
-var r;
-var i;
-
-it1 = iterator( 0.5 );
+const it1 = iterator( 0.5 );
 
 // Generate pseudorandom numbers, thus progressing the generator state:
-for ( i = 0; i < 1000; i++ ) {
-    r = it1.next().value;
+for ( let i = 0; i < 1000; i++ ) {
+    const r = it1.next().value;
 }
 
 // Create a new iterator initialized to the current state of `it1`:
-it2 = iterator( 0.5, {
+const it2 = iterator( 0.5, {
     'state': it1.state
 });
 
 // Test that the generated pseudorandom numbers are the same:
-bool = ( it1.next().value === it2.next().value );
+const bool = ( it1.next().value === it2.next().value );
 // returns true
 ```
 
 To seed the iterator, set the `seed` option.
 
 ```javascript
-var it1 = iterator( 0.5, {
+const it1 = iterator( 0.5, {
     'seed': 12345
 });
 
-var r1 = it1.next().value;
+const r1 = it1.next().value;
 // returns <number>
 
-var it2 = iterator( 0.5, {
+const it2 = iterator( 0.5, {
     'seed': 12345
 });
 
-var r2 = it2.next().value;
+const r2 = it2.next().value;
 // returns <number>
 
-var bool = ( r1 === r2 );
+const bool = ( r1 === r2 );
 // returns true
 ```
 
 To limit the number of iterations, set the `iter` option.
 
 ```javascript
-var it = iterator( 0.5, {
+const it = iterator( 0.5, {
     'iter': 2
 });
 
-var r = it.next().value;
+let r = it.next().value;
 // returns <number>
 
 r = it.next().value;
@@ -178,20 +172,17 @@ The returned iterator protocol-compliant object has the following properties:
 <!-- eslint no-undef: "error" -->
 
 ```javascript
-var iterator = require( '@stdlib/random/iter/bernoulli' );
-
-var it;
-var r;
+const iterator = require( '@stdlib/random/iter/bernoulli' );
 
 // Create a seeded iterator for generating pseudorandom numbers:
-it = iterator( 0.3, {
+const it = iterator( 0.3, {
     'seed': 1234,
     'iter': 10
 });
 
 // Perform manual iteration...
 while ( true ) {
-    r = it.next();
+    const r = it.next();
     if ( r.done ) {
         break;
     }