SemVer DSL

A simple internal DSL which allows you to invoke different functionality depending on version match. Used in codelyzer for keeping the code compatible across different versions of the Angular compiler.

Demo

``bash
$ npm i semver-dsl --save
`

`ts
import {SemVerDSL} from 'semver-dsl';

const base = () => {};
const elseIf1 = () => {};
const elseIf2 = () => {};
const else = () => console.log('I will be invoked!');

SemVerDSL('3.0.0')
.gt('3.2.1', base)
.elseIf.gt('3.0.1', elseIf1)
.elseIf.between('3.0.1', '3.1.8', elseIf2)
.else(else);
`

In the example above will be invoked else.

API

- SemDSL(version: string) - factory which accepts a version and returns an object.
- gte(version: string, callback?: Function): ISemContextualDSL - returns an object with elseIf and else properties.
- lte(version: string, callback?: Function): ISemContextualDSL - returns an object with elseIf and else properties.
- gt(version: string, callback?: Function): ISemContextualDSL - returns an object with elseIf and else properties.
- lt(version: string, callback?: Function): ISemContextualDSL - returns an object with elseIf and else properties.
- eq(version: string, callback?: Function): ISemContextualDSL - returns an object with elseIf and else properties.
- neq(version: string, callback?: Function): ISemContextualDSL - returns an object with elseIf and else properties.
- between(v1: string, v2: string, callback?: Function): ISemContextualDSL - returns an object with elseIf properties.
- elseIf - returns an object of type ISemVerDSL bound to the previous predicate.
- else - invokes given callback if all of the previous conditions have failed.

`ts
export interface ISemVerDSL {
gte(version: string, callback: Function): ISemContextualDSL;
lte(version: string, callback: Function): ISemContextualDSL;
gt(version: string, callback: Function): ISemContextualDSL;
lt(version: string, callback: Function): ISemContextualDSL;
eq(version: string, callback: Function): ISemContextualDSL;
neq(version: string, callback: Function): ISemContextualDSL;
between(v1: string, v2: string, callback: Function): ISemContextualDSL;
}
`

`ts
export interface ISemVerContextBoundDSL {
elseIf: ISemVerDSL;
else(callback: Function): void;
}
``

License

MIT