v0.281.0

Reviewed By: panagosg7

Differential Revision: D81684933

fbshipit-source-id: 54afe486b7d82361321d2cadcba8e24b03026faa

Author: SamChou19815

Changelog.md

@@ -1,3 +1,26 @@
+### 0.281.0
+
+Breaking Changes:
+* Support for the `casting_syntax=colon` is removed. This means that the [as casting syntax](https://flow.org/en/docs/types/casting/#toc-type-cast-expression-syntax) is always enabled.
+* `experimental.error_code_migration` config option is removed. In the previously version, the only allowed value was `new`.
+
+Likely to cause new Flow errors:
+* We have fixed more source of object literal unsoundness. More errors will be exposed. ([example](https://flow.org/try/#1N4Igxg9gdgZglgcxALlAIwIZoKYBsD6uEEAztvhgE6UYCe+JADpdhgCYowa5kA0I2KAFcAtiRQAXSkOz9sADwxgJ+NPTbYuQ3BMnTZA+Y2yU4IwRO4A6SFBIrGVDGM7c+h46fNRLuKxJIGWh8MeT0ZfhYlCStpHzNsFBAMIQkIEQwJODAQfiEyfBE4eWw2fDgofDBMsAALfAA3KjgsXGxxZC4eAw0G-GhcWn9aY3wWZldu-g1mbGqJUoBaCRHEzrcDEgBrbAk62kXhXFxJ923d-cPRHEpTgyEoMDaqZdW7vKgoOfaSKgOKpqmDA+d4gB5fMA-P6LCCMLLQbiLOoYCqgh6-GDYRYIXYLSgkRZkCR4jpddwPfJLZjpOBkUEKTwJEJ+DAkMiUFSwkyZCC3dbdAC+-EgGiStnsAAIYMQJQBeCXATCUZASgDkqoFAG4ADqwGWshVKlX2UxQBASgA+EuEIhuWolAHoHRLZg04BB8oNrRAJSZKLzeN6AO6+6i88T8BomEjuqBJDL2EwgAVAA))
+* For most of the common invariant subtyping errors (arrays, objects with mutable fields), we will now emit a single subtyping error with explanation how to fix. Error locations might change. See https://flow.org/en/docs/lang/variance/#toc-invariance to learn more about variance of types
+* Suppressions without error code will now be an error instead of a warning.
+* Suppressions without error code will no longer apply. You can download and use [this script](https://github.com/facebook/flow/blob/7551ae4431f17b0ed93657ed7b3c73d7e8654486/scripts/add-specific-error-code.js#L12) to automatically migrate most of the suppressions.
+* Only `$FlowFixMe` and `$FlowExpectedError` are supported suppression comments. Existing `$FlowIgnore` and `$FlowIssue` will no longer suppress anything.
+
+New Features:
+* Added a Flow lint `require-explicit-enum-checks` which works like `require-explicit-enum-switch-cases` but for `match`.
+
+Notable bug fixes:
+* Various codemods will now insert parentheses around expressions in class extends if they are changed. Previously, it might result in invalid code like `class Foo extends myExpr() as Bar`
+* Fixes an inconsistency in recording the this-type guard on a regular (non-`declare`) method in the same vs different files.
+
+IDE:
+* Added a quickfix to convert type to value imports on type-as-value errors.
+
 ### 0.280.0
 
 Likely to cause new Flow errors:

flow_parser.opam

@@ -1,6 +1,6 @@
 opam-version: "2.0"
 name: "flow_parser"
-version: "0.280.0"
+version: "0.281.0"
 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: "0.280.0"
+version: "0.281.0"
 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" {= "0.280.0"}
+  "flow_parser" {= "0.281.0"}
   "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": "0.280.0",
+  "version": "0.281.0",
   "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": "0.280.0",
+  "version": "0.281.0",
   "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": "2.280.0",
+  "version": "2.281.0",
   "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": "0.280.0",
+  "version": "0.281.0",
   "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 = "0.280.0"
+let version = "0.281.0"

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": "^0.280.0"
+    "flow-bin": "^0.281.0"
   },
   "scripts": {
     "flow": "flow"