v0.266.0

Reviewed By: alexmckenley

Differential Revision: D71916910

fbshipit-source-id: f4fcbb5bc064beb20c8cdce82c25f9a719922366

Author: SamChou19815

Changelog.md

@@ -1,3 +1,21 @@
+### 0.266.0
+
+Likely to cause new Flow errors:
+* Support for `$PropertyType` and `$ElementType` has been removed. Now referencing these types will just resolve to a global type if you have your own definition for them, and result in a `cannot-resolve-name` error otherwise. These types have been replaced by index access types for a long time. You can migrate to index access types by enabling use-indexed-access-type from https://www.npmjs.com/package/eslint-plugin-fb-flow and running the quickfixes. If you are unable to migrate, you can add the following to your global libdefs:
+```
+type $PropertyType<T, K> = T[K];
+type $ElementType<T, K> = T[K];
+```
+* Now given the subtyping check `component()<: component(ref?: ref_prop)`, Flow will ensure that `ref_prop` is a subtype of `void` instead of a subtype of `React.RefSetter<void>`.
+* `React$ComponentType`, which was previously given `[internal-type]` error on every usage, is now removed.
+* `React.ComponentType<Props>` is now only an alias of `component(...Props)`, instead of some special cased types. This comes with stricter checks and conversions, such as making Props readonly, erroring on the presence the ref prop instead of silently ignoring them, and ensures that `Props` is a subtype of `{...}`. In addition, the `React$AbstractComponent` type is removed.
+
+Notable bug fixes:
+* fixed a subtle unsoundness in the inference of computed-property dictionary object creation (e.g. [try-Flow](https://flow.org/try/#1N4Igxg9gdgZglgcxALlAIwIZoKYBsD6uEEAztvhgE6UYCe+JADpdhgCYowa5kA0I2KAFcAtiRQAXSkOz9sADwxgJ+NPTbYuQ3BMnTZA+Y2yU4IwRO4A6SFBIrGVDGM7c+h46fNRLuKxJIGWh8MeT0ZfhYlCStpHzNsFBAMIQkIEQwJODAQfiEyfBE4eWw2fDgofDBMsAALfAA3KjgsXGxxZC4eAw0G-GhcWn9aY3wWZldu-g1mbGqJUoBaCRHEzrcDEgBrbAk62kXhXFxJ923d-cPRHEpTgyEoMDaqZdW7vKgoOfaSKgOKpqmDA+d4gB5fMA-P6LCCMLLQbiLOoYCqgh6-GDYRYIXYLSgkRZkCR4jpddwPfJLZjpOBkO4AX34kA0SQ0Tyo2AABIDOfJkJz7KYoAgANwAHSgbNwHO5VE5tH5goqoolEts9k5EDQACsAIz84AAbSVwoAuvzdfTOQBeTnACWczmG+Tmzm63gOp20V0AZl4nIA9AHOQB3ODHTkmSgQSgS+ki3IgBomEhwaBJBoABisACYAGwAVisPpA9KAA))
+
+Library Definitions:
+* `React.lazy` and `React.memo` is now generic over the presence or absence of ref prop.
+
 ### 0.265.3
 
 * Make `@flowtyped` resolution support work on Windows.

flow_parser.opam

@@ -1,6 +1,6 @@
 opam-version: "2.0"
 name: "flow_parser"
-version: "0.265.3"
+version: "0.266.0"
 maintainer: "[email protected]"
 authors: ["Flow Team <[email protected]>"]
 homepage: "https://github.com/facebook/flow/tree/master/src/parser"

flowtype.opam

@@ -1,6 +1,6 @@
 opam-version: "2.0"
 name: "flowtype"
-version: "0.265.3"
+version: "0.266.0"
 maintainer: "[email protected]"
 authors: "Flow Team <[email protected]>"
 license: "MIT"
@@ -15,7 +15,7 @@ depends: [
   "camlp-streams" {>= "5.0.1"}
   "dtoa" {>= "0.3.2"}
   "fileutils" {>= "0.6.4"}
-  "flow_parser" {= "0.265.3"}
+  "flow_parser" {= "0.266.0"}
   "inotify" {os = "linux" & >= "2.4.1"}
   "ounit2" {with-test}
   "lwt" {>= "5.7.0"}

packages/flow-parser-bin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "flow-parser-bin",
-  "version": "0.265.3",
+  "version": "0.266.0",
   "description": "The Flow JavaScript parser, via bindings to the native OCaml implementation",
   "main": "index.js",
   "repository": "https://github.com/facebook/flow.git",

packages/flow-parser/package.json

@@ -1,6 +1,6 @@
 {
   "name": "flow-parser",
-  "version": "0.265.3",
+  "version": "0.266.0",
   "description": "JavaScript parser written in OCaml. Produces ESTree AST",
   "homepage": "https://flow.org",
   "license": "MIT",

packages/flow-remove-types/package.json

@@ -1,6 +1,6 @@
 {
   "name": "flow-remove-types",
-  "version": "2.265.3",
+  "version": "2.266.0",
   "description": "Removes Flow type annotations from JavaScript files with speed and simplicity.",
   "author": {
     "name": "Flow Team",

packages/try-flow-website-js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "try-flow-website-js",
-  "version": "0.265.3",
+  "version": "0.266.0",
   "description": "An NPM package to hold compiled `flow.js` and libdefs for every Flow version.",
   "license": "MIT",
   "repository": "facebook/flow",

src/common/flow_version.ml

@@ -5,4 +5,4 @@
  * LICENSE file in the root directory of this source tree.
  *)
 
-let version = "0.265.3"
+let version = "0.266.0"

website/docs/install.md

@@ -126,7 +126,7 @@ npm install --save-dev flow-bin
   "name": "my-flow-project",
   "version": "1.0.0",
   "devDependencies": {
-    "flow-bin": "^0.265.3"
+    "flow-bin": "^0.266.0"
   },
   "scripts": {
     "flow": "flow"