SwiftScript

Usage:

./swiftscript.py example.swift will output example.swift.ts.

./swiftscript.py --toJS example.swift will output example.swift.ts and attempt to run example.swift.ts through the TypeScript compiler, outputting example.swift.js.

WARNING: SwiftScript is not smart enough to make sure that it always outputs valid TypeScript! (It's literally just a few regular expressions. For now, garbage in -> garbage out :)

About:

A Swift-to-JavaScript compiler would be pretty cool, since it could allow development for mobile, desktop, and web in one language. Fortunately the TypeScript folks have done almost all of the hard work, and conveniently (a limited subset of) Swift can be converted to TypeScript with nothing but syntax transformations.

This project tries to be an easy-to-understand and easy-to-use tool for writing TypeScript in Swift syntax. I don't currently plan to add support for all of Swift's long list of advanced features, but we'll see how far it goes.

Below are the syntax transformations that will be supported, with Swift code on the first line and the equivalent TypeScript code on the second.

---

let x = 5

const x = 5;

---

println("Hello")

console.log("Hello");

---

func test(cat: String, dog: String) -> String {}
test("binx", "fido")

function test(cat: string, dog: string): string {}
test("binx", "fido");

---

func test(#cat: String, canine dog: String) -> String {
    return dog + cat
}
test(cat: "bijou", canine: "fido")

function test(args: {cat: string, canine: string}): string {
    var cat = args.cat;
    var dog = args.canine;
    return dog + cat;
}
test({cat: "binx", canine: "fido"})

---

"Hello \(a+b) world"

`Hello ${a+b} world`

---

Bool maps to boolean, String maps to string, and Int/Float/Double map to number.

---

Todo:

• if/else statements
• for/while loops

Wishlist:

• variadic functions
• optional arguments
• parameter default values
• var [x,y] = [10,20]
• structs to interfaces
• classes to classes
• lambdas