When `useDefineForClassFields` is enabled, ```ts class Foo { constructor(public b1 = 2.1) { } } ``` is transformed to ```js class Foo { constructor(b1 = 2.1) { this.b1 = b1; } } ``` [playground](https://playground.oxc.rs/?options=%7B%22run%22%3A%7B%22lint%22%3Atrue%2C%22formatter%22%3Afalse%2C%22transform%22%3Atrue%2C%22isolatedDeclarations%22%3Afalse%2C%22whitespace%22%3Afalse%2C%22mangle%22%3Afalse%2C%22compress%22%3Afalse%2C%22scope%22%3Atrue%2C%22symbol%22%3Atrue%2C%22cfg%22%3Afalse%7D%2C%22parser%22%3A%7B%22extension%22%3A%22tsx%22%2C%22allowReturnOutsideFunction%22%3Atrue%2C%22preserveParens%22%3Atrue%2C%22allowV8Intrinsics%22%3Atrue%2C%22semanticErrors%22%3Atrue%7D%2C%22linter%22%3A%7B%7D%2C%22formatter%22%3A%7B%22useTabs%22%3Afalse%2C%22tabWidth%22%3A2%2C%22endOfLine%22%3A%22lf%22%2C%22printWidth%22%3A80%2C%22singleQuote%22%3Afalse%2C%22jsxSingleQuote%22%3Afalse%2C%22quoteProps%22%3A%22as-needed%22%2C%22trailingComma%22%3A%22all%22%2C%22semi%22%3Atrue%2C%22arrowParens%22%3A%22always%22%2C%22bracketSpacing%22%3Atrue%2C%22bracketSameLine%22%3Afalse%2C%22objectWrap%22%3A%22preserve%22%2C%22singleAttributePerLine%22%3Afalse%7D%2C%22transformer%22%3A%7B%22target%22%3A%22esnext%22%2C%22useDefineForClassFields%22%3Atrue%2C%22experimentalDecorators%22%3Afalse%2C%22emitDecoratorMetadata%22%3Afalse%7D%2C%22isolatedDeclarations%22%3A%7B%22stripInternal%22%3Afalse%7D%2C%22codegen%22%3A%7B%22normal%22%3Atrue%2C%22jsdoc%22%3Atrue%2C%22annotation%22%3Atrue%2C%22legal%22%3Atrue%7D%2C%22compress%22%3A%7B%7D%2C%22mangle%22%3A%7B%22topLevel%22%3Atrue%2C%22keepNames%22%3Afalse%7D%2C%22controlFlow%22%3A%7B%22verbose%22%3Afalse%7D%2C%22inject%22%3A%7B%22inject%22%3A%7B%7D%7D%2C%22define%22%3A%7B%22define%22%3A%7B%7D%7D%7D&code=class+Foo+%7B%0A++constructor%28public+b1+%3D+2.1%29+%7B%0A++%7D%0A%7D%0A). But it should be transformed to ```js class Foo { b1; constructor(b1 = 2.1) { this.b1 = b1; } } ``` ([TS playground](https://www.typescriptlang.org/play/?useDefineForClassFields=true&target=99&isolatedModules=true&isolatedDeclarations=false#code/MYGwhgzhAEBiD29oG8BQ1rHgOwgFwCcBXYPeAgCgAciAjEAS2GloEZoBeaAJgDpWAlCnTQAvqnFA)). refs https://github.com/evanw/esbuild/issues/4421
When
useDefineForClassFieldsis enabled,is transformed to
playground.
But it should be transformed to
(TS playground).
refs evanw/esbuild#4421