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fix(eslint-plugin): [no-extra-parens] handle await with type assertion #5428

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merged 3 commits into from Aug 7, 2022
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fix(eslint-plugin): [no-extra-parens] handle await with type assertion #5428

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f07d785
fix(eslint-plugin): [no-extra-parens] handle await with type assertion
yeonjuan Aug 6, 2022
dc3656d
apply review
yeonjuan Aug 7, 2022
ab6fad3
Merge branch 'main' into fix/#5124
JoshuaKGoldberg Aug 7, 2022
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13 changes: 13 additions & 0 deletions packages/eslint-plugin/src/rules/no-extra-parens.ts
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Expand Up @@ -123,6 +123,19 @@ export default util.createRule<Options, MessageIds>({
},
// AssignmentExpression
// AwaitExpression
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AwaitExpression(node) {
if (util.isTypeAssertion(node.argument)) {
// reduces the precedence of the node so the rule thinks it needs to be rapped
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return rules.AwaitExpression({
...node,
argument: {
...node.argument,
type: AST_NODE_TYPES.SequenceExpression as any,
},
});
}
return rules.AwaitExpression(node);
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},
BinaryExpression: binaryExp,
CallExpression: callExp,
// ClassDeclaration
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11 changes: 10 additions & 1 deletion packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
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Expand Up @@ -19,6 +19,7 @@ ruleTester.run('no-extra-parens', rule, {
valid: [
...batchedSingleLineTests({
code: `
async function f(arg: any) { await (arg as Promise<void>); }
(0).toString();
(function(){}) ? a() : b();
(/^a$/).test(x);
Expand Down Expand Up @@ -238,6 +239,8 @@ for (a of (b));
typeof (a);
a<import('')>((1));
new a<import('')>((1));
a<(A)>((1));
async function f(arg: any) { await ((arg as Promise<void>)); }
`,
output: `
a = b * c;
Expand All @@ -248,7 +251,8 @@ for (a of b);
typeof a;
a<import('')>(1);
new a<import('')>(1);
a<(A)>((1));
a<(A)>(1);
async function f(arg: any) { await (arg as Promise<void>); }
`,
errors: [
{
Expand Down Expand Up @@ -296,6 +300,11 @@ a<(A)>((1));
line: 10,
column: 8,
},
{
messageId: 'unexpected',
line: 11,
column: 37,
},
],
}),
...batchedSingleLineTests({
Expand Down