[Docs] Add evalmd, fix broken examples in README, and ensure all examples have assertions.

Author: ljharb

README.md

@@ -12,13 +12,18 @@ The **qs** module was originally created and maintained by [TJ Holowaychuk](http
 
 ```javascript
 var qs = require('qs');
+var assert = require('assert');
 
-var obj = qs.parse('a=c');    // { a: 'c' }
-var str = qs.stringify(obj);  // 'a=c'
+var obj = qs.parse('a=c');
+assert.deepEqual(obj, { a: 'c' });
+
+var str = qs.stringify(obj);
+assert.equal(str, 'a=c');
 ```
 
 ### Parsing Objects
 
+[](#preventEval)
 ```javascript
 qs.parse(string, [options]);
 ```
@@ -27,51 +32,52 @@ qs.parse(string, [options]);
 For example, the string `'foo[bar]=baz'` converts to:
 
 ```javascript
-{
+assert.deepEqual(qs.parse('foo[bar]=baz'), {
   foo: {
     bar: 'baz'
   }
-}
+});
 ```
 
 When using the `plainObjects` option the parsed value is returned as a plain object, created via `Object.create(null)` and as such you should be aware that prototype methods will not exist on it and a user may set those names to whatever value they like:
 
 ```javascript
-qs.parse('a.hasOwnProperty=b', { plainObjects: true });
-// { a: { hasOwnProperty: 'b' } }
+var plainObject = qs.parse('a[hasOwnProperty]=b', { plainObjects: true });
+assert.deepEqual(plainObject, { a: { hasOwnProperty: 'b' } });
 ```
 
 By default parameters that would overwrite properties on the object prototype are ignored, if you wish to keep the data from those fields either use `plainObjects` as mentioned above, or set `allowPrototypes` to `true` which will allow user input to overwrite those properties. *WARNING* It is generally a bad idea to enable this option as it can cause problems when attempting to use the properties that have been overwritten. Always be careful with this option.
 
 ```javascript
-qs.parse('a.hasOwnProperty=b', { allowPrototypes: true });
-// { a: { hasOwnProperty: 'b' } }
+var protoObject = qs.parse('a[hasOwnProperty]=b', { allowPrototypes: true });
+assert.deepEqual(protoObject, { a: { hasOwnProperty: 'b' } });
 ```
 
 URI encoded strings work too:
 
 ```javascript
-qs.parse('a%5Bb%5D=c');
-// { a: { b: 'c' } }
+assert.deepEqual(qs.parse('a%5Bb%5D=c'), {
+  a: { b: 'c' }
+});
 ```
 
 You can also nest your objects, like `'foo[bar][baz]=foobarbaz'`:
 
 ```javascript
-{
+assert.deepEqual(qs.parse('foo[bar][baz]=foobarbaz'), {
   foo: {
     bar: {
       baz: 'foobarbaz'
     }
   }
-}
+});
 ```
 
 By default, when nesting objects **qs** will only parse up to 5 children deep. This means if you attempt to parse a string like
 `'a[b][c][d][e][f][g][h][i]=j'` your resulting object will be:
 
 ```javascript
-{
+var expected = {
   a: {
     b: {
       c: {
@@ -85,136 +91,138 @@ By default, when nesting objects **qs** will only parse up to 5 children deep. T
       }
     }
   }
-}
+};
+var string = 'a[b][c][d][e][f][g][h][i]=j';
+assert.deepEqual(qs.parse(string), expected);
 ```
 
 This depth can be overridden by passing a `depth` option to `qs.parse(string, [options])`:
 
 ```javascript
-qs.parse('a[b][c][d][e][f][g][h][i]=j', { depth: 1 });
-// { a: { b: { '[c][d][e][f][g][h][i]': 'j' } } }
+var deep = qs.parse('a[b][c][d][e][f][g][h][i]=j', { depth: 1 });
+assert.deepEqual(deep, { a: { b: { '[c][d][e][f][g][h][i]': 'j' } } });
 ```
 
 The depth limit helps mitigate abuse when **qs** is used to parse user input, and it is recommended to keep it a reasonably small number.
 
 For similar reasons, by default **qs** will only parse up to 1000 parameters. This can be overridden by passing a `parameterLimit` option:
 
 ```javascript
-qs.parse('a=b&c=d', { parameterLimit: 1 });
-// { a: 'b' }
+var limited = qs.parse('a=b&c=d', { parameterLimit: 1 });
+assert.deepEqual(limited, { a: 'b' });
 ```
 
 An optional delimiter can also be passed:
 
 ```javascript
-qs.parse('a=b;c=d', { delimiter: ';' });
-// { a: 'b', c: 'd' }
+var delimited = qs.parse('a=b;c=d', { delimiter: ';' });
+assert.deepEqual(delimited, { a: 'b', c: 'd' });
 ```
 
 Delimiters can be a regular expression too:
 
 ```javascript
-qs.parse('a=b;c=d,e=f', { delimiter: /[;,]/ });
-// { a: 'b', c: 'd', e: 'f' }
+var regexed = qs.parse('a=b;c=d,e=f', { delimiter: /[;,]/ });
+assert.deepEqual(regexed, { a: 'b', c: 'd', e: 'f' });
 ```
 
 Option `allowDots` can be used to enable dot notation:
 
 ```javascript
-qs.parse('a.b=c', { allowDots: true });
-// { a: { b: 'c' } }
+var withDots = qs.parse('a.b=c', { allowDots: true });
+assert.deepEqual(withDots, { a: { b: 'c' } });
 ```
 
 ### Parsing Arrays
 
 **qs** can also parse arrays using a similar `[]` notation:
 
 ```javascript
-qs.parse('a[]=b&a[]=c');
-// { a: ['b', 'c'] }
+var withArray = qs.parse('a[]=b&a[]=c');
+assert.deepEqual(withArray, { a: ['b', 'c'] });
 ```
 
 You may specify an index as well:
 
 ```javascript
-qs.parse('a[1]=c&a[0]=b');
-// { a: ['b', 'c'] }
+var withIndexes = qs.parse('a[1]=c&a[0]=b');
+assert.deepEqual(withIndexes, { a: ['b', 'c'] });
 ```
 
 Note that the only difference between an index in an array and a key in an object is that the value between the brackets must be a number
 to create an array. When creating arrays with specific indices, **qs** will compact a sparse array to only the existing values preserving
 their order:
 
 ```javascript
-qs.parse('a[1]=b&a[15]=c');
-// { a: ['b', 'c'] }
+var noSparse = qs.parse('a[1]=b&a[15]=c');
+assert.deepEqual(noSparse, { a: ['b', 'c'] });
 ```
 
 Note that an empty string is also a value, and will be preserved:
 
 ```javascript
-qs.parse('a[]=&a[]=b');
-// { a: ['', 'b'] }
-qs.parse('a[0]=b&a[1]=&a[2]=c');
-// { a: ['b', '', 'c'] }
+var withEmptyString = qs.parse('a[]=&a[]=b');
+assert.deepEqual(withEmptyString, { a: ['', 'b'] });
+
+var withIndexedEmptyString = qs.parse('a[0]=b&a[1]=&a[2]=c');
+assert.deepEqual(withIndexedEmptyString, { a: ['b', '', 'c'] });
 ```
 
 **qs** will also limit specifying indices in an array to a maximum index of `20`. Any array members with an index of greater than `20` will
 instead be converted to an object with the index as the key:
 
 ```javascript
-qs.parse('a[100]=b');
-// { a: { '100': 'b' } }
+var withMaxIndex = qs.parse('a[100]=b');
+assert.deepEqual(withMaxIndex, { a: { '100': 'b' } });
 ```
 
 This limit can be overridden by passing an `arrayLimit` option:
 
 ```javascript
-qs.parse('a[1]=b', { arrayLimit: 0 });
-// { a: { '1': 'b' } }
+var withArrayLimit = qs.parse('a[1]=b', { arrayLimit: 0 });
+assert.deepEqual(withArrayLimit, { a: { '1': 'b' } });
 ```
 
 To disable array parsing entirely, set `parseArrays` to `false`.
 
 ```javascript
-qs.parse('a[]=b', { parseArrays: false });
-// { a: { '0': 'b' } }
+var noParsingArrays = qs.parse('a[]=b', { parseArrays: false });
+assert.deepEqual(noParsingArrays, { a: { '0': 'b' } });
 ```
 
 If you mix notations, **qs** will merge the two items into an object:
 
 ```javascript
-qs.parse('a[0]=b&a[b]=c');
-// { a: { '0': 'b', b: 'c' } }
+var mixedNotation = qs.parse('a[0]=b&a[b]=c');
+assert.deepEqual(mixedNotation, { a: { '0': 'b', b: 'c' } });
 ```
 
 You can also create arrays of objects:
 
 ```javascript
-qs.parse('a[][b]=c');
-// { a: [{ b: 'c' }] }
+var arraysOfObjects = qs.parse('a[][b]=c');
+assert.deepEqual(arraysOfObjects, { a: [{ b: 'c' }] });
 ```
 
 ### Stringifying
 
+[](#preventEval)
 ```javascript
 qs.stringify(object, [options]);
 ```
 
 When stringifying, **qs** by default URI encodes output. Objects are stringified as you would expect:
 
 ```javascript
-qs.stringify({ a: 'b' });
-// 'a=b'
-qs.stringify({ a: { b: 'c' } });
-// 'a%5Bb%5D=c'
+assert.equal(qs.stringify({ a: 'b' }), 'a=b');
+assert.equal(qs.stringify({ a: { b: 'c' } }), 'a%5Bb%5D=c');
 ```
 
 This encoding can be disabled by setting the `encode` option to `false`:
 
 ```javascript
-qs.stringify({ a: { b: 'c' } }, { encode: false });
-// 'a[b]=c'
+var unencoded = qs.stringify({ a: { b: 'c' } }, { encode: false });
+assert.equal(unencoded, 'a[b]=c');
 ```
 
 Examples beyond this point will be shown as though the output is not URI encoded for clarity. Please note that the return values in these cases *will* be URI encoded during real usage.
@@ -247,22 +255,19 @@ qs.stringify({ a: ['b', 'c'] }, { arrayFormat: 'repeat' })
 Empty strings and null values will omit the value, but the equals sign (=) remains in place:
 
 ```javascript
-qs.stringify({ a: '' });
-// 'a='
+assert.equal(qs.stringify({ a: '' }), 'a=');
 ```
 
 Properties that are set to `undefined` will be omitted entirely:
 
 ```javascript
-qs.stringify({ a: null, b: undefined });
-// 'a='
+assert.equal(qs.stringify({ a: null, b: undefined }), 'a=');
 ```
 
 The delimiter may be overridden with stringify as well:
 
 ```javascript
-qs.stringify({ a: 'b', c: 'd' }, { delimiter: ';' });
-// 'a=b;c=d'
+assert.equal(qs.stringify({ a: 'b', c: 'd' }, { delimiter: ';' }), 'a=b;c=d');
 ```
 
 Finally, you can use the `filter` option to restrict which keys will be included in the stringified output.
@@ -283,11 +288,11 @@ function filterFunc(prefix, value) {
   }
   return value;
 }
-qs.stringify({ a: 'b', c: 'd', e: { f: new Date(123), g: [2] } }, { filter: filterFunc })
+qs.stringify({ a: 'b', c: 'd', e: { f: new Date(123), g: [2] } }, { filter: filterFunc });
 // 'a=b&c=d&e[f]=123&e[g][0]=4'
-qs.stringify({ a: 'b', c: 'd', e: 'f' }, { filter: ['a', 'e'] })
+qs.stringify({ a: 'b', c: 'd', e: 'f' }, { filter: ['a', 'e'] });
 // 'a=b&e=f'
-qs.stringify({ a: ['b', 'c', 'd'], e: 'f' }, { filter: ['a', 0, 2] })
+qs.stringify({ a: ['b', 'c', 'd'], e: 'f' }, { filter: ['a', 0, 2] });
 // 'a[0]=b&a[2]=d'
 ```
 
@@ -296,36 +301,35 @@ qs.stringify({ a: ['b', 'c', 'd'], e: 'f' }, { filter: ['a', 0, 2] })
 By default, `null` values are treated like empty strings:
 
 ```javascript
-qs.stringify({ a: null, b: '' });
-// 'a=&b='
+var withNull = qs.stringify({ a: null, b: '' });
+assert.equal(withNull, 'a=&b=');
 ```
 
 Parsing does not distinguish between parameters with and without equal signs. Both are converted to empty strings.
 
 ```javascript
-qs.parse('a&b=')
-// { a: '', b: '' }
+var equalsInsensitive = qs.parse('a&b=');
+assert.deepEqual(equalsInsensitive, { a: '', b: '' });
 ```
 
 To distinguish between `null` values and empty strings use the `strictNullHandling` flag. In the result string the `null`
 values have no `=` sign:
 
 ```javascript
-qs.stringify({ a: null, b: '' }, { strictNullHandling: true });
-// 'a&b='
+var strictNull = qs.stringify({ a: null, b: '' }, { strictNullHandling: true });
+assert.equal(strictNull, 'a&b=');
 ```
 
 To parse values without `=` back to `null` use the `strictNullHandling` flag:
 
 ```javascript
-qs.parse('a&b=', { strictNullHandling: true });
-// { a: null, b: '' }
-
+var parsedStrictNull = qs.parse('a&b=', { strictNullHandling: true });
+assert.deepEqual(parsedStrictNull, { a: null, b: '' });
 ```
 
 To completely skip rendering keys with `null` values, use the `skipNulls` flag:
 
 ```javascript
-qs.stringify({ a: 'b', c: null}, { skipNulls: true })
-// 'a=b'
+var nullsSkipped = qs.stringify({ a: 'b', c: null}, { skipNulls: true });
+assert.equal(nullsSkipped, 'a=b');
 ```

package.json

@@ -30,11 +30,13 @@
     "mkdirp": "^0.5.1",
     "eslint": "^1.10.3",
     "@ljharb/eslint-config": "^1.6.1",
-    "parallelshell": "^2.0.0"
+    "parallelshell": "^2.0.0",
+    "evalmd": "^0.0.16"
   },
   "scripts": {
-    "test": "parallelshell 'npm run lint' 'npm run coverage'",
-    "tests-only": "node test",
+    "test": "parallelshell 'npm run readme' 'npm run lint' 'npm run coverage'",
+    "tests-only": "parallelshell 'npm run readme' 'node test'",
+    "readme": "evalmd README.md",
     "lint": "eslint lib/*.js text/*.js",
     "coverage": "covert test",
     "dist": "mkdirp dist && browserify --standalone Qs lib/index.js > dist/qs.js",