CHANGELOG.md

0.17.0

BREAKING CHANGES:

• Propagate errors when calling Result.flatMap.

0.16.1

FIXES:

• Fix match type inference for match function in result and option modules

0.16.0

BREAKING CHANGES:

• Change type guards to return never instead of false
• Change type guards to return never instead of false in option

CHANGES:

• Add terser to minify code published to npm

FIXES:

• Fix details tags in Option and Result README

0.15.0

BREAKING CHANGES:

• Add Result.toJSON method and static variant
• Add Option.toJSON method and static variant

0.14.0

BREAKING CHANGES:

• Change build_npm target to ES2022 to support cause property

CHANGES:

• Add cause property when throwing with expect on Err type

FEATURES:

• Add Option.all and Option.any static methods
• Add Result.all and Result.any static methods

0.13.1

FEATURES:

• Add Result.partition static method
• Add Result.toString method and higher-order function variant
• Add Option.toString method and higher-order function variant

0.13.0

FEATURES:

• Add Option.zip method and higher-order function variant

FIXES:

• Fix expectErr code examples in Result module README
• Fix type inference for unwrap, unwrapErr, isOk and isErr HOFs

CHANGES:

• Improve type inference for result higher order functions
• Improve type inference for Option flatMap
• Improve type inference for Option higher order functions

0.12.0

FEATURES:

• Add expect and expectErr for Result

FIXES:

• Fix imports in Result module documentation code example

CHANGES:

• Improve constructor documentation
• Improve Result isOk and isErr type guard type inference
• Improve Option isSome and isNone type guard type inference

0.11.1

FIXES:

• Strip comments from option.js and result.js files

0.11.0

BREAKING CHANGES:

• Option module overhaul
• Result module overhaul

0.10.0

FEATURES:

• Add Option.filter function to filter options
• Add Result.filter function to filter results
• Support promise likes with Option.from and Result.from functions

CHANGES:

• Better type inference for union types with Option.match
• Better type inference for union types with Result.match
• Change Result.from to error map function as the second argument

FIXES:

• Fix Option.match and Result.match generic could be any type

0.9.0

BREAKING CHANGES:

• Use undefined instead of void as the unit type for Result

CHANGES:

• Improve return type correctness for Option.from function
• Make the value in Some explicitly of type NonNullable
• Improve type inference for Option type
• Improve type inference for Result type

0.8.0

BREAKING CHANGES:

Functions Option.fromNullable, Option.fromPromise, Result.fromThrowable and Result.fromPromise were removed in favor of using Option.from or Result.from instead.

• Add Result.from function
• Add Option.from function

CHANGES:

• Add @module documentation for Result
• Add @module documentation for Option

0.7.0

FIXES:

• Fix "slow types" in Option
• Fix "slow types" in Result

0.6.0

BREAKING CHANGES:

• Change the order of arguments in Option match function

CHANGES:

• Remove comments from transpiled js files
• Add return type for Result.flatMap instead of relying on inference
• Allow null values with Result.ok and Result.err

FIXES:

• Fix type inference for match and flatMap in Option
• Fix type inference for match and flatMap in Result
• Fix documentation in Result

0.5.0

BREAKING CHANGES:

• Export Result as a namespace
• Export Option as a namespace
• Change the order of arguments in match function
• Add void type for Result.ok and Result.err

CHANGES:

• Reflect the Result type signature name change in README
• Make result error type name more verbose

0.4.0

FEATURES:

• Add fromPromise function for Option and Result modules

CHANGES:

• Make unwrapOr default value use contained type T

0.3.0

FEATURES:

• Add Result utility type
• Add more complex example for the Option type

CHANGES:

• Create separate README for Option
• Use flatMap instead of bind

FIXES:

• Fix signature style in README for Option.inspect

0.2.0

FEATURES:

• Add Option.inspect

CHANGES:

• Remove duplication from the root README option example

FIXES:

• Fix option type simple example

0.1.0

FEATURES:

• Add Option utility type
• Add build_npm script to generate node compatible code