Lots of updates

This commit is contained in:
baldo 2016-05-16 13:33:49 +02:00
parent e3cfff8310
commit 39e7af6238
454 changed files with 221168 additions and 36622 deletions

View file

@ -0,0 +1,55 @@
'use strict';
var _ = require('lodash'),
async = require('async'),
path = require('path'),
webpack = require('webpack');
var file = require('../common/file');
var basePath = path.join(__dirname, '..', '..'),
distPath = path.join(basePath, 'dist'),
fpPath = path.join(basePath, 'fp'),
filename = 'lodash.fp.js';
var fpConfig = {
'entry': path.join(fpPath, '_convertBrowser.js'),
'output': {
'path': distPath,
'filename': filename,
'library': 'fp',
'libraryTarget': 'umd'
},
'plugins': [
new webpack.optimize.OccurenceOrderPlugin,
new webpack.optimize.DedupePlugin
]
};
var mappingConfig = {
'entry': path.join(fpPath, '_mapping.js'),
'output': {
'path': distPath,
'filename': 'mapping.fp.js',
'library': 'mapping',
'libraryTarget': 'umd'
}
};
/*----------------------------------------------------------------------------*/
function onComplete(error) {
if (error) {
throw error;
}
}
function build() {
async.series([
_.partial(webpack, mappingConfig),
_.partial(webpack, fpConfig),
file.min(path.join(distPath, filename))
], onComplete);
}
build();

View file

@ -0,0 +1,65 @@
'use strict';
var _ = require('lodash'),
fs = require('fs-extra'),
path = require('path');
var file = require('../common/file'),
mapping = require('../common/mapping');
var templatePath = path.join(__dirname, 'template/doc'),
template = file.globTemplate(path.join(templatePath, '*.jst'));
var argNames = ['a', 'b', 'c', 'd'];
var templateData = {
'mapping': mapping,
'toArgOrder': toArgOrder,
'toFuncList': toFuncList
};
function toArgOrder(array) {
var reordered = [];
_.each(array, function(newIndex, index) {
reordered[newIndex] = argNames[index];
});
return '`(' + reordered.join(', ') + ')`';
}
function toFuncList(array) {
var chunks = _.chunk(array.slice().sort(), 5),
lastChunk = _.last(chunks),
last = lastChunk ? lastChunk.pop() : undefined;
chunks = _.reject(chunks, _.isEmpty);
lastChunk = _.last(chunks);
var result = '`' + _.map(chunks, function(chunk) {
return chunk.join('`, `') + '`';
}).join(',\n`');
if (last == null) {
return result;
}
if (_.size(chunks) > 1 || _.size(lastChunk) > 1) {
result += ',';
}
result += ' &';
result += _.size(lastChunk) < 5 ? ' ' : '\n';
return result + '`' + last + '`';
}
/*----------------------------------------------------------------------------*/
function onComplete(error) {
if (error) {
throw error;
}
}
function build(target) {
target = path.resolve(target);
fs.writeFile(target, template.wiki(templateData), onComplete);
}
build(_.last(process.argv));

View file

@ -0,0 +1,120 @@
'use strict';
var _ = require('lodash'),
async = require('async'),
glob = require('glob'),
path = require('path');
var file = require('../common/file'),
mapping = require('../common/mapping');
var templatePath = path.join(__dirname, 'template/modules'),
template = file.globTemplate(path.join(templatePath, '*.jst'));
var aryMethods = _.union(
mapping.aryMethod[1],
mapping.aryMethod[2],
mapping.aryMethod[3],
mapping.aryMethod[4]
);
var categories = [
'array',
'collection',
'date',
'function',
'lang',
'math',
'number',
'object',
'seq',
'string',
'util'
];
var ignored = [
'_*.js',
'core.js',
'core.min.js',
'fp.js',
'index.js',
'lodash.js',
'lodash.min.js'
];
function isAlias(funcName) {
return _.has(mapping.aliasToReal, funcName);
}
function isCategory(funcName) {
return _.includes(categories, funcName);
}
function isThru(funcName) {
return !_.includes(aryMethods, funcName);
}
function getTemplate(moduleName) {
var data = {
'name': _.result(mapping.aliasToReal, moduleName, moduleName),
'mapping': mapping
};
if (isAlias(moduleName)) {
return template.alias(data);
}
if (isCategory(moduleName)) {
return template.category(data);
}
if (isThru(moduleName)) {
return template.thru(data);
}
return template.module(data);
}
/*----------------------------------------------------------------------------*/
function onComplete(error) {
if (error) {
throw error;
}
}
function build(target) {
target = path.resolve(target);
var fpPath = path.join(target, 'fp');
// Glob existing lodash module paths.
var modulePaths = glob.sync(path.join(target, '*.js'), {
'nodir': true,
'ignore': ignored.map(function(filename) {
return path.join(target, filename);
})
});
// Add FP alias and remapped module paths.
_.each([mapping.aliasToReal, mapping.remap], function(data) {
_.forOwn(data, function(realName, alias) {
var modulePath = path.join(target, alias + '.js');
if (!_.includes(modulePaths, modulePath)) {
modulePaths.push(modulePath);
}
});
});
var actions = modulePaths.map(function(modulePath) {
var moduleName = path.basename(modulePath, '.js');
return file.write(path.join(fpPath, moduleName + '.js'), getTemplate(moduleName));
});
actions.unshift(file.copy(path.join(__dirname, '../../fp'), fpPath));
actions.push(file.write(path.join(fpPath, '_falseOptions.js'), template._falseOptions()));
actions.push(file.write(path.join(fpPath, '_util.js'), template._util()));
actions.push(file.write(path.join(target, 'fp.js'), template.fp()));
actions.push(file.write(path.join(fpPath, 'convert.js'), template.convert()));
async.series(actions, onComplete);
}
build(_.last(process.argv));

View file

@ -0,0 +1,227 @@
## lodash/fp
The `lodash/fp` module promotes a more
[functional programming](https://en.wikipedia.org/wiki/Functional_programming)
(FP) friendly style by exporting an instance of `lodash` with its methods wrapped
to produce immutable auto-curried iteratee-first data-last methods.
## Installation
In a browser:
```html
<script src='path/to/lodash.js'></script>
<script src='path/to/lodash.fp.js'></script>
<script>
// Loading `lodash.fp.js` converts `_` to its fp variant.
_.defaults({ 'a': 2, 'b': 2 })({ 'a': 1 });
// → { 'a: 1, 'b': 2 }
// Use `noConflict` to restore the pre-fp variant.
var fp = _.noConflict();
_.defaults({ 'a': 1 }, { 'a': 2, 'b': 2 });
// → { 'a: 1, 'b': 2 }
fp.defaults({ 'a': 2, 'b': 2 })({ 'a': 1 });
// → { 'a: 1, 'b': 2 }
</script>
```
In Node.js:
```js
// Load the fp build.
var fp = require('lodash/fp');
// Load a method category.
var object = require('lodash/fp/object');
// Load a single method for smaller builds with browserify/rollup/webpack.
var extend = require('lodash/fp/extend');
```
## Mapping
Immutable auto-curried iteratee-first data-last methods sound great, but what
does that really mean for each method? Below is a breakdown of the mapping used
to convert each method.
#### Capped Iteratee Arguments
Iteratee arguments are capped to avoid gotchas with variadic iteratees.
```js
// The `lodash/map` iteratee receives three arguments:
// (value, index|key, collection)
_.map(['6', '8', '10'], parseInt);
// → [6, NaN, 2]
// The `lodash/fp/map` iteratee is capped at one argument:
// (value)
fp.map(parseInt)(['6', '8', '10']);
// → [6, 8, 10]
```
Methods that cap iteratees to one argument:<br>
<%= toFuncList(_.keys(_.pickBy(mapping.iterateeAry, _.partial(_.eq, _, 1)))) %>
Methods that cap iteratees to two arguments:<br>
<%= toFuncList(_.keys(_.pickBy(mapping.iterateeAry, _.partial(_.eq, _, 2)))) %>
The iteratee of `mapKeys` is invoked with one argument: (key)
#### Fixed Arity
Methods have fixed arities to support auto-currying.
```js
// `lodash/padStart` accepts an optional `chars` param.
_.padStart('a', 3, '-')
// → '--a'
// `lodash/fp/padStart` does not.
fp.padStart(3)('a');
// → ' a'
fp.padCharsStart('-')(3)('a');
// → '--a'
```
Methods with a fixed arity of one:<br>
<%= toFuncList(_.difference(mapping.aryMethod[1], _.keys(mapping.skipFixed))) %>
Methods with a fixed arity of two:<br>
<%= toFuncList(_.difference(mapping.aryMethod[2], _.keys(mapping.skipFixed))) %>
Methods with a fixed arity of three:<br>
<%= toFuncList(_.difference(mapping.aryMethod[3], _.keys(mapping.skipFixed))) %>
Methods with a fixed arity of four:<br>
<%= toFuncList(_.difference(mapping.aryMethod[4], _.keys(mapping.skipFixed))) %>
#### Rearranged Arguments
Method arguments are rearranged to make composition easier.
```js
// `lodash/filter` is data-first iteratee-last:
// (collection, iteratee)
var compact = _.partial(_.filter, _, Boolean);
compact(['a', null, 'c']);
// → ['a', 'c']
// `lodash/fp/filter` is iteratee-first data-last:
// (iteratee, collection)
var compact = fp.filter(Boolean);
compact(['a', null, 'c']);
// → ['a', 'c']
```
##### Most methods follow these rules
A fixed arity of two has an argument order of:<br>
<%= toArgOrder(mapping.aryRearg[2]) %>
A fixed arity of three has an argument order of:<br>
<%= toArgOrder(mapping.aryRearg[3]) %>
A fixed arity of four has an argument order of:<br>
<%= toArgOrder(mapping.aryRearg[4]) %>
##### Exceptions to the rules
Methods that accept an array of arguments as their second parameter:<br>
<%= toFuncList(_.keys(mapping.methodSpread)) %>
Methods with unchanged argument orders:<br>
<%= toFuncList(_.keys(mapping.skipRearg)) %>
Methods with custom argument orders:<br>
<%= _.map(_.keys(mapping.methodRearg), function(methodName) {
var orders = mapping.methodRearg[methodName];
return ' * `_.' + methodName + '` has an order of ' + toArgOrder(orders);
}).join('\n') %>
#### New Methods
Not all variadic methods have corresponding new method variants. Feel free to
[request](https://github.com/lodash/lodash/blob/master/.github/CONTRIBUTING.md#feature-requests)
any additions.
Methods created to accommodate Lodashs variadic methods:<br>
<%= toFuncList(_.keys(mapping.remap)) %>
#### Aliases
There are <%= _.size(mapping.aliasToReal) %> method aliases:<br>
<%= _.map(_.keys(mapping.aliasToReal).sort(), function(alias) {
var realName = mapping.aliasToReal[alias];
return ' * `_.' + alias + '` is an alias of `_.' + realName + '`';
}).join('\n') %>
## Placeholders
The placeholder argument, which defaults to `_`, may be used to fill in method
arguments in a different order. Placeholders are filled by the first available
arguments of the curried returned function.
```js
// The equivalent of `2 > 5`.
_.gt(2)(5);
// → false
// The equivalent of `_.gt(5, 2)` or `5 > 2`.
_.gt(_, 2)(5);
// → true
```
## Chaining
The `lodash/fp` module **does not** convert chain sequence methods. See
[Izaak Schroeders article](https://medium.com/making-internets/why-using-chain-is-a-mistake-9bc1f80d51ba)
on using functional composition as an alternative to method chaining.
## Convert
Although `lodash/fp` & its method modules come pre-converted, there are times
when you may want to customize the conversion. Thats when the `convert` method
comes in handy.
```js
// Every option is `true` by default.
var _fp = fp.convert({
// Specify capping iteratee arguments.
'cap': true,
// Specify currying.
'curry': true,
// Specify fixed arity.
'fixed': true,
// Specify immutable operations.
'immutable': true,
// Specify rearranging arguments.
'rearg': true
});
// The `convert` method is available on each method too.
var mapValuesWithKey = fp.mapValues.convert({ 'cap': false });
// Heres an example of disabling iteratee argument caps to access the `key` param.
mapValuesWithKey(function(value, key) {
return key == 'a' ? -1 : value;
})({ 'a': 1, 'b': 1 });
// => { 'a': -1, 'b': 1 }
```
Manual conversions are also possible with the `convert` module.
```js
var convert = require('lodash/fp/convert');
// Convert by name.
var assign = convert('assign', require('lodash.assign'));
// Convert by object.
var fp = convert({
'assign': require('lodash.assign'),
'chunk': require('lodash.chunk')
});
// Convert by `lodash` instance.
var fp = convert(lodash.runInContext());
```
## Tooling
Use [eslint-plugin-lodash-fp](https://www.npmjs.com/package/eslint-plugin-lodash-fp)
to help use `lodash/fp` more efficiently.

View file

@ -0,0 +1,7 @@
module.exports = {
'cap': false,
'curry': false,
'fixed': false,
'immutable': false,
'rearg': false
};

View file

@ -0,0 +1,14 @@
module.exports = {
'ary': require('../ary'),
'assign': require('../_baseAssign'),
'clone': require('../clone'),
'curry': require('../curry'),
'forEach': require('../_arrayEach'),
'isArray': require('../isArray'),
'isFunction': require('../isFunction'),
'iteratee': require('../iteratee'),
'keys': require('../_baseKeys'),
'rearg': require('../rearg'),
'spread': require('../spread'),
'toPath': require('../toPath')
};

View file

@ -0,0 +1 @@
module.exports = require('./<%= name %>');

View file

@ -0,0 +1,2 @@
var convert = require('./convert');
module.exports = convert(require('../<%= name %>'));

View file

@ -0,0 +1,18 @@
var baseConvert = require('./_baseConvert'),
util = require('./_util');
/**
* Converts `func` of `name` to an immutable auto-curried iteratee-first data-last
* version with conversion `options` applied. If `name` is an object its methods
* will be converted.
*
* @param {string} name The name of the function to wrap.
* @param {Function} [func] The function to wrap.
* @param {Object} [options] The options object. See `baseConvert` for more details.
* @returns {Function|Object} Returns the converted function or object.
*/
function convert(name, func, options) {
return baseConvert(util, name, func, options);
}
module.exports = convert;

View file

@ -0,0 +1,2 @@
var _ = require('./lodash.min').runInContext();
module.exports = require('./fp/_baseConvert')(_, _);

View file

@ -0,0 +1,5 @@
var convert = require('./convert'),
func = convert('<%= name %>', require('../<%= _.result(mapping.remap, name, name) %>'));
func.placeholder = require('./placeholder');
module.exports = func;

View file

@ -0,0 +1,5 @@
var convert = require('./convert'),
func = convert('<%= name %>', require('../<%= _.result(mapping.remap, name, name) %>'), require('./_falseOptions'));
func.placeholder = require('./placeholder');
module.exports = func;