@rslike/[email protected]

Patch Changes

• 2513e9b: Adds promise-like API and security fixes

  What's new

  Add primise-like API for Option and Result

  Result uses ok and err for callbacks.

  Example:

  const result = new Result((ok, err) => {
    if (true) ok(1);
    err("Some Error");
  });
  
  result.unwrap(); // 1

  Option uses some and none for callbacks.

  NOTE some(null) and some(undefined) will be converted to none automatically since it nullable values.

  Example:

  const o = new Option((some, none) => {
    some(undefined);
  });
  
  o.isNone(); // true

  Result and Option now uses withResolves as Promise API.

  Example:

  const { ok, result, err } = Result.withResolvers();
  
  ok(3);
  
  result.unwrap(); // 3

  Security fixes

  • 38 - fixes @babel/traverse package

@rslike/[email protected]

Patch Changes

• Updated dependencies [2513e9b]
  • @rslike/[email protected]

@rslike/[email protected]

Patch Changes

• df8b72a: ## What's new

  Add primise-like API for Option and Result

  Result uses ok and err for callbacks.

  Example:

  const result = new Result((ok, err) => {
    if (true) ok(1);
    err("Some Error");
  });
  
  result.unwrap(); // 1

  Option uses some and none for callbacks.

  NOTE some(null) and some(undefined) will be converted to none automatically since it nullable values.

  Example:

  const o = new Option((some, none) => {
    some(undefined);
  });
  
  o.isNone(); // true

  Result and Option now uses withResolves as Promise API.

  Example:

  const { ok, result, err } = Result.withResolvers();
  
  ok(3);
  
  result.unwrap(); // 3

@rslike/[email protected]

Major Changes

• 861b1fb:

What's new

See on Wiki: https://github.com/vitalics/rslike/wiki/01-std

std

All changes applies to Option and Result objects.

Symbols for Option and Result objects

Implements Symbol.iterator, Symbol.asyncIterator, Symbol.search, Symbol.split, Symbol.inspect, Symbol.toPrimitive, Symbol.toStringTag for Option and Result objects

Example:

    // Before
    const arr = Some([1, 2, 3]);
    // error, for..of only supports with arrays
    for (let el of arr) {
    }

As a workaround you may unwrap the value:

    // workaround
    const arr = Some([1, 2, 3]);
    // error, for..of now works with arrays
    for (let el of arr.unwrap()) {
    }

Now you can "just call for..of".

    // now it works
    const arr = Some([1, 2, 3]);
    // error, for..of only supports with arrays
    for (let el of arr) {
      // works now!
    }

Note: This method will only yeild if the Option is Some

Note: throws UndefinedBehaviorError for Some(value) if value is not implements Symbol.iterator

More about examples with Symbols implementation you can found in wiki

Symbol.hasInstance for Some, None, Ok and Err functions

Now you can call instanceof keyword for functions. From now you can skip importing Result and Option classes.

Example:

    // Before
    import { Ok, Err, Result } from "@rslike/std";
    const a = Ok(3);
    a instanceof Ok; // false
    a instanceof Result; // true

    // now, less imports
    import { Ok, Err } from "@rslike/std";
    const b = Ok(3);
    b instanceof Ok; // true
    b instanceof Err; // false
    Err("Some Err") instanceof Err; // true

Advanced Types inferring

Add more complex TS types to understands have value or not.

Example:

    // Before
    const a = Some(3);

    a.isSome(); // TS type: boolean

    // now
    a.isSome(); // TS type: true

double unwraping in match function for Result<Option<T>, E>

From now you just can use match function with only 1 unwrapping.

If you're using Async or Bind functions - your result will be wraped to Result<Option<_>>. To unwrap this result you must to use double matching.

Example (before - 67 lines):

    import { Bind, match, Err } from "@rslike/std";
    function divide(a: number, b: number) {
      if (b === 0) Err("Divide to zero");
      if (a === 0) Ok(0);
      if (Number.isNaN(a) || Number.isNaN(b)) return undefined;
      return a / b;
    }

    const binded = Bind(divide);
    const fn1 = binded(1, 1); // Result<Option<number | undefined>, string>
    const fn2 = binded(NaN, 1); // Result<Option<undefined>, string>

    const res1 = match(
      fn1, // or fn2
      (res) => {
        return match(
          res,
          (value) => {
            console.log("value is:", value);
          },
          () => {
            console.log("value is None");
          }
        );
      },
      (err) => {
        console.error(err);
      }
    );

    console.log(res1); // value is: 1
    console.log(res2); // value is None

Example (now - 27 lines):

    import { Bind, match, Err } from "@rslike/std";
    function divide(a: number, b: number) {
      if (b === 0) Err("Divide to zero");
      if (a === 0) Ok(0);
      if (Number.isNaN(a) || Number.isNaN(b)) return undefined;
      return a / b;
    }

    const binded = Bind(divide);
    const fn1 = binded(1, 1); // Result<Option<number | undefined>, string>
    const fn2 = binded(NaN, 1); // Result<Option<undefined>, string>

    const res1 = match(
      fn1, // or fn2
      (value) => {
        console.log("value is:", value);
      },
      (err) => {
        if (err) console.error(err);
        else console.log("value is None");
      }
    );

    console.log(res1); // value is: 1
    console.log(res2); // value is None

@rslike/[email protected]

Major Changes

• 861b1fb: Nothing for dbg package. Sync dependency

@rslike/[email protected]

Major Changes

• 861b1fb:

What's new

cmp

Compare package now register in global scope Symbol.compare, Symbol.partialEquals and Symbol.equals.

for more examples how to work with theese symbols see at wiki

Definitions for built-in objects.

• Number and NumberConstructor implements Symbol.compare, Symbol.partialEquals and Symbol.equals
• String and StringConstructor implements Symbol.compare, Symbol.partialEquals and Symbol.equals
• Boolean and BooleanConstructor implements Symbol.compare, Symbol.partialEquals and Symbol.equals
• Date and DateConstructor implements Symbol.compare, Symbol.partialEquals and Symbol.equals

utilities function

@rslike/cmp now export utilities function compare, partialEquals and equals. All this functions call Symbols implementation. (e.g. compare calls Symbol.compare implementation)

• compare calls Symbol.compare implementation
• partialEquals calls Symbol.partialEquals implementation
• equals calls Symbol.equals implementation

Patch Changes

• Updated dependencies [861b1fb]
  • @rslike/[email protected]

@rslike/[email protected]

Patch Changes

• d34b352: make dbg package more reliable for external building

@rslike/[email protected]

Patch Changes

• 9bfb757: make dbg package more reliable for external building

@rslike/[email protected]

Patch Changes

• d34b352: make dbg package more reliable for external building

@rslike/[email protected]

Patch Changes

• 9bfb757: make dbg package more reliable for external building