ts-changeset

ecto like changesets for typescript

``typescript
const changesetFn = (changeset: Changeset) =>
changeset
.validateAcceptance("agreedToTerms")
.validateLength("age", { gt: 18 })
.validateFormat("name", /[A-Za-z0-9\-_]+/)
.validateRequired(["age", "name", "agreedToTerms"]);

let changeset = new Changeset({
age: 0,
name: "",
agreedToTerms: false
});

let changeset = changesetFn(changeset);

console.log(changeset.getErrors());
console.log(changeset.isValid());
``