v0.214.0

Likely to cause new Flow errors:

• Flow now has stricter behavior with $Call, $ObjMap, $ObjMapi, $ObjMapConst, $TupleMap. Previously hidden type errors might be revealed now.
• You can no longer disable tuple_ehancements, conditional_type, mapped_type, type_guards in flowconfig, since these options have been removed. They were enabled by default since v0.212.0.

IDE:

• We now provide a new refactor that extracts JSX elements into a new React component.
• Extract to constant refactors now works for nested JSX elements and fragments.

Notable bug fixes:

• Added default type arguments for the built-in React$AbstractComponent to match the React.AbstractComponent type alias in our libdefs. [try-flow]

Library Definitions:

• Added parseArgs to the Node.js util module library definition

v0.213.1

Notable bug fixes:

• Fixed a bug where local find references do not return references in jsx props.

v0.213.0

Likely to cause new Flow errors:

• Builtin idx support is removed. idx functions can now be typed with conditional type and mapped type. The v3 release of idx contains these typing changes.
• When using module.system=haste, it will now be an error if a .js.flow file shadows a .js file with a different path prefix.

Notable bug fixes:

• Fixed a bug that used to cause spurious internal errors when you have non-binding patterns. example

Parser:

• Fixed parsing of multiple as/satisfies casts in a row.

Library Definitions:

• Added support for Intl.Locale class

v0.212.0

Likely to cause new Flow errors:

• Flow is now stricter with regards to type checking of spreads, $NonMaybeType, and $ReadOnly. You might see new errors revealed as a result.
• Experimental utility types $Pred and $Refine have been deleted. These are replaced by type guards.

New Features:

• Updated Pick and Omit to work on interfaces and instances.
• Conditional types, mapped types, type guards, and tuple enhancements are now enabled by default.

Notable bug fixes:

• Prevented hover and go-to-definition requests that infinitely loop.

IDE:

• For imported names using require, go-to-definition will now jump to the location of the original definition's name.

v0.211.1

Notable bug fixes:

• Improve fuzzy matching of autoimports

v0.211.0

Likely to cause new Flow errors:

• We fixed an issue where the intersection of two identical object types are turned into empty in spreads. As a result, more errors might be revealed. example

Notable bug fixes:

• We fixed an eager evaluation bug that can lead to some bad interactions between conditional type and mapped type. (example)

Parser:

• We fixed the parser size regression since 0.210.0.

Library Definitions:

• We rewrote the Omit type implementation. Now it will preserve the optionality and the variance of the input object. example

v0.210.2

Notable bug fixes:

• Fix a bug where autocompleting a keyword deleted the next 7 characters on the same line
• "Fix" sorting of autoimports. An experimental option (autoimports_ranked_by_usage=true) to sort autoimports by how often they are imported was influencing the sorting even when the option was not enabled. This was likely an improvement, but it was a bug to not obey the option.

v0.210.1

Misc:

• Improvements in preparation of new feature rollout

v0.210.0

Likely to cause new Flow errors:

• We further strictified React.Element and React refs related typing. You might also see some existing errors related to React.Element and React ref moved around. Example

New Features:

• Added Pick, Omit, and Record utility types. [try-flow]

Notable bug fixes:

• Fixed a bug where void would appear in autocomplete suggestions more than once

Misc:

• Improved keyword autocomplete ordering

Parser:

Library Definitions:

• Added missing CSSOM replace and replaceSync
• Added arrayBuffers to Node libdefs for process.memoryUsage()'s return type

v0.209.1

Misc:

• Bug fixes in preparation of new feature rollout