refactor: updates to comments and code per feedback (#101)

index.js

@@ -174,7 +174,6 @@ const parseArgs = ({
           ArrayPrototypePush(expanded, `-${shortOption}`);
         } else {
           // String option in middle. Yuck.
-          // ToDo: if strict then throw
           // Expand -abfFILE to -a -b -fFILE
           ArrayPrototypePush(expanded, `-${StringPrototypeSlice(arg, index)}`);
           break; // finished short group

test/index.js

@@ -91,7 +91,7 @@ test('short option group does not consume subsequent positional', (t) => {
   t.end();
 });
 
-// // See: Guideline 5 https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap12.html
+// See: Guideline 5 https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap12.html
 test('if terminal of short-option group configured `type: "string"`, subsequent positional is stored', (t) => {
   const passedArgs = ['-rvf', 'foo'];
   const passedOptions = { f: { type: 'string' } };
@@ -249,7 +249,7 @@ test('when expecting `multiple:true` boolean option and option used multiple tim
   t.end();
 });
 
-test('order of option and positional does not matter (per README)', function(t) {
+test('order of option and positional does not matter (per README)', (t) => {
   const passedArgs1 = ['--foo=bar', 'baz'];
   const passedArgs2 = ['baz', '--foo=bar'];
   const passedOptions = { foo: { type: 'string' } };
@@ -362,17 +362,17 @@ test('invalid argument passed for options', (t) => {
   const passedArgs = ['--so=wat'];
   const passedOptions = 'bad value';
 
-  t.throws(function() { parseArgs({ args: passedArgs, options: passedOptions }); }, {
+  t.throws(() => { parseArgs({ args: passedArgs, options: passedOptions }); }, {
     code: 'ERR_INVALID_ARG_TYPE'
   });
 
   t.end();
 });
 
-test('then type property missing for option then throw', function(t) {
+test('then type property missing for option then throw', (t) => {
   const knownOptions = { foo: { } };
 
-  t.throws(function() { parseArgs({ options: knownOptions }); }, {
+  t.throws(() => { parseArgs({ options: knownOptions }); }, {
     code: 'ERR_INVALID_ARG_TYPE'
   });
 
@@ -383,7 +383,7 @@ test('boolean passed to "type" option', (t) => {
   const passedArgs = ['--so=wat'];
   const passedOptions = { foo: { type: true } };
 
-  t.throws(function() { parseArgs({ args: passedArgs, options: passedOptions }); }, {
+  t.throws(() => { parseArgs({ args: passedArgs, options: passedOptions }); }, {
     code: 'ERR_INVALID_ARG_TYPE'
   });
 
@@ -394,7 +394,7 @@ test('invalid union value passed to "type" option', (t) => {
   const passedArgs = ['--so=wat'];
   const passedOptions = { foo: { type: 'str' } };
 
-  t.throws(function() { parseArgs({ args: passedArgs, options: passedOptions }); }, {
+  t.throws(() => { parseArgs({ args: passedArgs, options: passedOptions }); }, {
     code: 'ERR_INVALID_ARG_TYPE'
   });
 
@@ -405,7 +405,7 @@ test('invalid short option length', (t) => {
   const passedArgs = [];
   const passedOptions = { foo: { short: 'fo', type: 'boolean' } };
 
-  t.throws(function() { parseArgs({ args: passedArgs, options: passedOptions }); }, {
+  t.throws(() => { parseArgs({ args: passedArgs, options: passedOptions }); }, {
     code: 'ERR_INVALID_ARG_VALUE'
   });
 

utils.js

@@ -43,7 +43,7 @@ function isOptionValue(value) {
 }
 
 /**
- * Determines if `arg` is a just a short option.
+ * Determines if `arg` is just a short option.
  * @example '-f'
  */
 function isLoneShortOption(arg) {
@@ -57,7 +57,7 @@ function isLoneShortOption(arg) {
  * @example
  * isLoneLongOption('a') // returns false
  * isLoneLongOption('-a') // returns false
- * isLoneLongOption('--foo) // returns true
+ * isLoneLongOption('--foo') // returns true
  * isLoneLongOption('--foo=bar') // returns false
  */
 function isLoneLongOption(arg) {
@@ -69,7 +69,7 @@ function isLoneLongOption(arg) {
 /**
  * Determines if `arg` is a long option and value in the same argument.
  * @example
- * isLongOptionAndValue('--foo) // returns false
+ * isLongOptionAndValue('--foo') // returns false
  * isLongOptionAndValue('--foo=bar') // returns true
  */
 function isLongOptionAndValue(arg) {
@@ -90,14 +90,14 @@ function isLongOptionAndValue(arg) {
  * isShortOptionGroup('-ab', {}) // returns true
  * // -fb is an option and a value, not a short option group
  * isShortOptionGroup('-fb', {
- *   options: { f: { type: 'string' }}
+ *   options: { f: { type: 'string' } }
  * }) // returns false
  * isShortOptionGroup('-bf', {
- *   options: { f: { type: 'string' }}
+ *   options: { f: { type: 'string' } }
  * }) // returns true
  * // -bfb is an edge case, return true and caller sorts it out
  * isShortOptionGroup('-bfb', {
- *   options: { f: { type: 'string' }}
+ *   options: { f: { type: 'string' } }
  * }) // returns true
  */
 function isShortOptionGroup(arg, options) {
@@ -111,10 +111,10 @@ function isShortOptionGroup(arg, options) {
 }
 
 /**
- * Determine is arg is a short string option followed by its value.
+ * Determine if arg is a short string option followed by its value.
  * @example
- * isShortOptionAndValue('-a, {}); // returns false
- * isShortOptionAndValue('-ab, {}); // returns false
+ * isShortOptionAndValue('-a', {}); // returns false
+ * isShortOptionAndValue('-ab', {}); // returns false
  * isShortOptionAndValue('-fFILE', {
  *   options: { foo: { short: 'f', type: 'string' }}
  * }) // returns true