[flow] Allow type casts in array patterns inside arrow parameters (#9069)

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-1/input.js

@@ -0,0 +1 @@
+[a: string];

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-1/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "The type cast expression is expected to be wrapped with parenthesis (1:2)"
+}

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-2/input.js

@@ -0,0 +1 @@
+([a: string]);

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-2/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "The type cast expression is expected to be wrapped with parenthesis (1:3)"
+}

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-3/input.js

@@ -0,0 +1 @@
+([a, [b: string]]);

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-3/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "The type cast expression is expected to be wrapped with parenthesis (1:7)"
+}

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-4/input.js

@@ -0,0 +1 @@
+async ([a: string]);

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-4/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "The type cast expression is expected to be wrapped with parenthesis (1:9)"
+}

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-5/input.js

@@ -0,0 +1 @@
+async ([a, [b: string]]);

packages/babel-parser/test/fixtures/flow/typecasts/fails-in-array-expression-5/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "The type cast expression is expected to be wrapped with parenthesis (1:13)"
+}

packages/babel-parser/test/fixtures/flow/typecasts/works-in-array-pattern/input.js

@@ -0,0 +1,14 @@
+([a: string]) => {};
+([a, [b: string]]) => {};
+([a: string] = []) => {};
+({ x: [a: string] }) => {};
+
+async ([a: string]) => {};
+async ([a, [b: string]]) => {};
+async ([a: string] = []) => {};
+async ({ x: [a: string] }) => {};
+
+let [a: string] = c;
+let [a, [b: string]] = c;
+let [a: string] = c;
+let { x: [a: string] } = c;