tslang utils

Some functional/semantic codes for TypeScript(JavaScript) development.

!Pipeline

- tslang utils
- installation
- type checker
- isDef
- isFunc
- isString
- isNumber
- isStrictNumber
- hasOwnProp
- Env
- isServer
- isBrowser
- License

installation

``bash
$ yarn add tslang-utils
`

type checker

$3

Whether value isn't undefined or null.

`ts
const a = { name: 'github user', bio: null }

isDef(a.name) // true
isDef(a.age) // false
isDef(a.bio) // false
`

$3

Whether value is Function type

`ts
isFunc(() => {}) // true
isFunc(true) // false
`

$3

`ts
isString('') // true
isString(true) // false
`

$3

Whether value is Number type. It will omit NaN when we set second parameter to true.

`ts
isNumber(0) // true
isNumber(NaN) // true
isNumber(NaN, true) // false
`

$3

Equivalent to isNumber(/ value /, true).

$3

Whether an object has a property with the specified name.

`ts
const a = { name: 'github user', bio: null }

hasOwnProp(a, 'name') // true
hasOwnProp(a, 'toString') // false
`

Env

$3

Whether current JS runtime is in the server(node.js) environment.

`ts
isSever() // true or false
`

$3

Whether current JS runtime is in the browser environment.

`ts
isBrowser() // true or false
``

License

MIT © Liu Bowen