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fiskerfisker
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Fix comments on class methods with decorators (#16891)
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4 files changed

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‎changelog_unreleased/typescript/16891.md‎

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#### Fix comments print on class methods with decorators (#16891 by @fisker)
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<!-- prettier-ignore -->
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```jsx
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// Input
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class A {
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@decorator
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/**
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* The method description
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*
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*/
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async method(foo: Foo, bar: Bar) {
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console.log(foo);
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}
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}
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// Prettier stable
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class A {
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@decorator
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async /**
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* The method description
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*
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*/
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method(foo: Foo, bar: Bar) {
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console.log(foo);
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}
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}
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// Prettier main
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class A {
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@decorator
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/**
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* The method description
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*
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*/
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async method(foo: Foo, bar: Bar) {
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console.log(foo);
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}
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}
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```

‎src/language-js/comments/handle-comments.js‎

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@@ -543,7 +543,7 @@ function handleMethodNameComments({
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if (
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precedingNode?.type === "Decorator" &&
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propertyLikeNodeTypes.has(enclosingNode?.type) &&
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isLineComment(comment)
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(isLineComment(comment) || comment.placement === "ownLine")
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) {
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addTrailingComment(precedingNode, comment);
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return true;

‎tests/format/typescript/comments/16889.ts‎

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class A {
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@decorator
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/**
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* The method description
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*
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*/
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async method() {
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}
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@decorator/**
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* The method description
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*
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*/
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async method() {
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}
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@decorator/**
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* The method description
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*
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*/ async method() {
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}
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@decorator
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async /* comment */ method() {
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}
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@decorator /* comment */ async method() {
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}
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@decorator
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// line comment
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async method() {
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}
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@decorator // line comment
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async method() {
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}
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@decorator
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/* comment */
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public async method() {
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}
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@decorator
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/* comment */
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static async method() {
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}
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@decorator
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/* comment */
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protected async method() {
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}
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@decorator
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/* comment */
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protected async method() {
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}
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@decorator
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/* comment */
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* method() {}
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@decorator
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* /* comment */ method() {}
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/* comment */
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abstract method():void;
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}
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‎tests/format/typescript/comments/__snapshots__/format.test.js.snap‎

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================================================================================
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`;
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exports[`16889.ts format 1`] = `
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====================================options=====================================
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parsers: ["typescript"]
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printWidth: 80
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| printWidth
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=====================================input======================================
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class A {
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@decorator
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/**
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* The method description
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*
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*/
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async method() {
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}
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@decorator/**
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* The method description
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*
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*/
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async method() {
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}
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@decorator/**
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* The method description
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*
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*/ async method() {
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}
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@decorator
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async /* comment */ method() {
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}
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@decorator /* comment */ async method() {
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}
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@decorator
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// line comment
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async method() {
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}
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@decorator // line comment
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async method() {
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}
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@decorator
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/* comment */
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public async method() {
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}
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@decorator
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/* comment */
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static async method() {
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}
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@decorator
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/* comment */
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protected async method() {
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}
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@decorator
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/* comment */
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protected async method() {
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}
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@decorator
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/* comment */
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* method() {}
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@decorator
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* /* comment */ method() {}
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/* comment */
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abstract method():void;
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}
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=====================================output=====================================
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class A {
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@decorator
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/**
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* The method description
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*
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*/
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async method() {}
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@decorator /**
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* The method description
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*
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*/
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async method() {}
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@decorator /**
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* The method description
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*
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*/
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async method() {}
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@decorator
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async /* comment */ method() {}
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@decorator /* comment */ async method() {}
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@decorator
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// line comment
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async method() {}
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@decorator // line comment
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async method() {}
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@decorator
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/* comment */
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public async method() {}
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@decorator
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/* comment */
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static async method() {}
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@decorator
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/* comment */
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protected async method() {}
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@decorator
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/* comment */
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protected async method() {}
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@decorator
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/* comment */
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*method() {}
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@decorator
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*/* comment */ method() {}
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/* comment */
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abstract method(): void;
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}
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================================================================================
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`;
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exports[`abstract_class.ts format 1`] = `
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====================================options=====================================
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parsers: ["typescript"]

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