Ordering

A collection of functions to manipulate ordering values

Index

Codec

• __decode__
• __encode__
• __schema__

Formatting

• asString

Indexable

• indexType
• at
• indexOf
• range
• rangeSize

Type

• __inspect__
• typeName
• asInstance
• hasInstance

Other

• __enumKeys__
• Equal
• Greater
• Less
• reverse

Codec

__decode__

• __decode__(this, input, context): Result<-1 | 0 | 1, CodecError>

• Returns the decoded input, Result.Ok or Result.Error()

  interface SomeObject {
    foo: string
  }
  const someCodec: Codec<SomeObject> = ...;
  const input: unknown = ...;
  const decoded = Codec.decode(someCodec, input);

__encode__

• __encode__(this, input): unknown

• Returns the encoded input

  interface SomeObject {
    foo: string
  }
  const someCodec: Codec<SomeObject> = ...;
  const someObject: SomeObject = { foo: "bar" }
  const encoded = Codec.decode(someCodec, someObject);

__schema__

• __schema__(this): JSONValue

• Returns the JSONSchema corresponding to the decoded type

  const someCodec: Codec<unknown> = ...;
  const jsonSchema = Codec.schema(someCodec);

Formatting

asString

• asString(this, self): string

• Converts the given value to a String.

  Number.asString(123); // '123'

Indexable

indexType

indexType: number

Index type

at

• at(index): Option<-1 | 0 | 1>

• Returns the value at the index

indexOf

• indexOf(value): Option<number>

• Returns the integer index of a value

range

• range(start, end): Range<-1 | 0 | 1>

• Returns an Iterable starting from start to end. If start or end is not in range then returns an empty iterable.

rangeSize

• rangeSize(start, end): number

• Returns the size of a range. If start or end is not in range then returns 0.

Type

__inspect__

__inspect__: Option<(anyValue, depth, options, inspect) => string>

When defined, returns a custom string representation. To be useful, it should be bound to a prototype (ex: Struct)

import { inspect } from 'node:util';

interface Foo {
  foo: boolean;
}
const Foo = Struct.define<Foo>({
  typeName: 'Foo',
  __inspect__: (self) => `Foo { ${String(self.foo)} }`,
});
const myStruct = Struct.create(Foo, { foo: true });// 'Foo { true }'
inspect(myStruct);// 'Foo { true }'

typeName

typeName: Ordering = 'Ordering'

Type string representation

StringType.typeName // 'String'
Int.typeName // 'Int'
Person.typeName // 'Person'

asInstance

• asInstance(this, anyValue): Option<-1 | 0 | 1>

• Try to convert anyValue to enum value or else returns Option.None

  const StringType: Type<string>;
  StringType.asInstance('foo'); // Option.Some('foo')
  StringType.asInstance(12); // Option.None

hasInstance

• hasInstance(this, anyValue): anyValue is -1 | 0 | 1

• Return true if the given value is an instance of the class.

  const StringType: Type<string>;
  StringType.hasInstance('foo'); // true
  StringType.hasInstance(42); // false

Other

readonly__enumKeys__

__enumKeys__: readonly (Less | Equal | Greater)[]

An array of all keys

Equal

Equal: 0 = 0

An ordering where a compared value is equal to another.

Greater

Greater: 1 = 1

An ordering where a compared value is greater than another.

Less

Less: -1 = -1

An ordering where a compared value is less than another.

reverse

• reverse(self): Ordering

• Reverses the Ordering.

  • Less becomes Greater.
  • Greater becomes Less.
  • Equal becomes Equal.

  reverse(Ordering.Less); // == Ordering.Greater
  reverse(Ordering.Greater); // == Ordering.Less
  reverse(Ordering.Equal); // == Ordering.Equal