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Refactor is* functions

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Timothy Farrell 2018-11-02 15:19:35 +00:00
parent ab0ca099ec
commit 2958a792a4
2 changed files with 19 additions and 17 deletions
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2
package.json
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@ -1,6 +1,6 @@
{ {
"name": "trimkit", "name": "trimkit",
"version": "1.0.2", "version": "1.0.3",
"description": "Javascript and DOM abstractions for smaller minifiable code", "description": "Javascript and DOM abstractions for smaller minifiable code",
"main": "dist/trimkit.js", "main": "dist/trimkit.js",
"module": "dist/trimkit.js", "module": "dist/trimkit.js",

34
src/index.js
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@ -1,4 +1,4 @@
// Copyright (c) 2016 Timothy Farrell // Copyright (c) 2018 Timothy Farrell
// //
// Licensed under the Apache License, Version 2.0 (the "License"); // Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License. // you may not use this file except in compliance with the License.
@ -48,29 +48,31 @@ export const ObjectKeys = Object.keys;
// Size saved after: ceil(20 / 7) = 3 usages // Size saved after: ceil(20 / 7) = 3 usages
export const DOMDocument = self.document; export const DOMDocument = self.document;
// ES5 output: function a(b){return"function"===typeof b}; const isType = str => obj => typeof obj === 'function';
// ES5 output A: var c=(function(t){return function a(b){return t===typeof b}})('function');
// ES5 output B: var c=a('function');
// Invocation comparison: typeof a==='function' ~~~ a(b) // Invocation comparison: typeof a==='function' ~~~ a(b)
// Size delta per invocation: 21 - 4 = 17 bytes // Size delta per invocation: 21 - 4 = 17 bytes
// Size saved after: ceil(43 / 17) = 3 usages // Size saved after (A): ceil(75 / 17) = 5 usages
export function isFunction(obj) { // Size saved after (B): ceil(20 / 17) = 2 usages
return typeof obj === 'function'; export const isFunction = isType('function');
}
// ES5 output: function a(b){return"string"===typeof b}; // ES5 output A: var c=(function(t){return function a(b){return t===typeof b}})('string');
// ES5 output B: var c=a('string');
// Invocation comparison: typeof a==='string' ~~~ a(b) // Invocation comparison: typeof a==='string' ~~~ a(b)
// Size delta per invocation: 19 - 4 = 15 bytes // Size delta per invocation: 19 - 4 = 15 bytes
// Size saved after: ceil(41 / 15) = 3 usages // Size saved after (A): ceil(73 / 15) = 5 usages
export function isString(obj) { // Size saved after (B): ceil(18 / 15) = 2 usages
return typeof obj === 'string'; export const isString = isType('string');
}
// ES5 output: function a(b){return"number"===typeof b}; // ES5 output A: var c=(function(t){return function a(b){return t===typeof b}})('number');
// ES5 output B: var c=a('number');
// Invocation comparison: typeof a==='number' ~~~ a(b) // Invocation comparison: typeof a==='number' ~~~ a(b)
// Size delta per invocation: 19 - 4 = 15 bytes // Size delta per invocation: 19 - 4 = 15 bytes
// Size saved after: ceil(41 / 15) = 3 usages // Size saved after (A): ceil(73 / 15) = 5 usages
export function isNumber(obj) { // Size saved after (B): ceil(18 / 15) = 2 usages
return typeof obj === 'number'; export const isNumber = isType('number');
}
// ES5 declaration: var a=null; // ES5 declaration: var a=null;
// Invocation comparison: null ~~~ a // Invocation comparison: null ~~~ a