added toCamelCase method

README.md

@@ -189,6 +189,7 @@ Sanitizer                              | Description
 **stripLow(input [, keep_new_lines])** | remove characters with a numerical value < 32 and 127, mostly control characters. If `keep_new_lines` is `true`, newline characters are preserved (`\n` and `\r`, hex `0xA` and `0xD`). Unicode-safe in JavaScript.
 **toBoolean(input [, strict])**        | convert the input string to a boolean. Everything except for `'0'`, `'false'` and `''` returns `true`. In strict mode only `'1'` and `'true'` return `true`.
 **toDate(input)**                      | convert the input string to a date, or `null` if the input is not a date.
+**toCamelCase(input)**                 | convert the input string to camelCase, or `null` if the input is not a string. String will be separated based on spaces, hyphens, or underscores.
 **toFloat(input)**                     | convert the input string to a float, or `NaN` if the input is not a float.
 **toInt(input [, radix])**             | convert the input string to an integer, or `NaN` if the input is not an integer.
 **trim(input [, chars])**              | trim characters (whitespace by default) from both sides of the input.

src/index.js

@@ -2,6 +2,7 @@ import toDate from './lib/toDate';
 import toFloat from './lib/toFloat';
 import toInt from './lib/toInt';
 import toBoolean from './lib/toBoolean';
+import toCamelCase from './lib/toCamelCase';
 import equals from './lib/equals';
 import contains from './lib/contains';
 import matches from './lib/matches';
@@ -228,6 +229,7 @@ const validator = {
   isWhitelisted,
   normalizeEmail,
   toString,
+  toCamelCase,
   isSlug,
   isStrongPassword,
   isTaxID,

src/lib/toCamelCase.js

@@ -0,0 +1,13 @@
+import assertString from './util/assertString';
+
+export default function toCamelCase(inputString) {
+  assertString(inputString);
+
+  const words = inputString.split(/[\s\-_]+/);
+
+  for (let i = 1; i < words.length; i++) {
+    words[i] = words[i].substr(0, 1).toUpperCase() + words[i].substr(1);
+  }
+
+  return words.join('');
+}

test/exports.test.js

@@ -16,6 +16,7 @@ describe('Exports', () => {
   it('should export sanitizers', () => {
     assert.strictEqual(typeof validator.toBoolean, 'function');
     assert.strictEqual(typeof validator.toFloat, 'function');
+    assert.strictEqual(typeof validator.toCamelCase, 'function');
   });
 
   it('should export the version number', () => {

test/sanitizers.test.js

@@ -153,6 +153,16 @@ describe('Sanitizers', () => {
     });
   });
 
+  it('should convert strings to camel case', () => {
+    test({
+      sanitizer: 'toCamelCase',
+      expect: {
+        'camle case': 'camleCase',
+        '': '',
+      },
+    });
+  });
+
   it('should escape HTML', () => {
     test({
       sanitizer: 'escape',