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///
/// Performs right-to-left function composition.
///
/// @param {Function[]} ...functions The pipeline of functions to send values through.
/// @returns The head of this pipeline.
var compose = function() {
  var functions = [];
  for (var i = 0; i < argument_count; ++i) {
    array_push(functions, argument[i]);
  }

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var assert_is_callable = function(actual) {
  if is_callable(actual) return;

  show_error($"Expected callable. Got {actual}", true);
};

var assert_is_array = function(actual) {
  if is_array(actual) return;

  show_error($"Expected callable. Got {actual}", true);

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declare function create<T>(this: void): PriorityQueue<T>;

interface PriorityQueue<T> {
  empty(): boolean;
  size(): number;
  /**
   * Swim up on the tree and fix the order heap property.
   */
  swim(): void;
  put(v: T, priority: number): void;

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declare function inspect(this: void, value: any): string;
declare namespace inspect {
  const prop: string;
}
export = inspect;

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PICO-8 Transformer

• Disallows LuaLibs
• Disallows classes
• Disallows iifes if (x = 0)
• Disallows non-tuple return methods

for loops

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Image Registry

LÖVE 2D can load images.

love.graphics.newImage("img/Player.png");

What is stopping you in TypeScript? The ImageRegistry.

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Effect Registry

LÖVE 2D allows Effects to be added to the audio that is playing. Each effect is added with a name which can be used to obtain the audio effect later.

love.audio.setEffect("myEffect", {...});
love.audio.getEffect("myEffect");

To aid TypeScript, an EffectRegistry interface has been provided to keep track of the audio effects planned to be set.

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Filepath Registry

LÖVE 2D can interact with the file system.

love.filesystem.getLastModified("file.txt");

However, there likely is a FileRegistry stopping you.

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Registries

LÖVE 2D can interact with many things through the use of strings.

love.audio.getEffect("anEffect");
// Nothing crashes if anEffect didn't exist

love.filesystem.readFile("file.txt");
// No crash, just returns an error

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// Works on 0.17.0

/**
 * @tupleReturn
 * @luaIterator
 */
declare function pairs(object: object): Iterable<[string, any]>;

declare const print: any;