A type checker for JavaScript inspired by Meteor's check.
npm install type-check-system --save
Check if value
is a string.
let value = 'This is a string.';
check(value, String);
Check if value
is a list of strings.
let value = ['a', 'b', 'c'];
check(value, [String]);
Check if value
is a string, or null.
let value = 'string';
check(value, String, null);
Check if value
is an object with key id
with type string.
let value = {
id: '0af390f0-abb6-4ef6-b9af-6287e6aab172'
};
check(value, {id: String});
Please have a look at the tests to see more examples.
This library does not expose any Match
-like functions, like Meteor's check library. Instead, this library only uses a check based on patterns to keep it's api simple. If you want Match
features, have a look at meteor-check instead.
To execute the tests, run the following commands:
npm run build
npm run test