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Co-authored-by: Michael Prentice <splaktar@gmail.com>
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# Update `module` and `target` compiler options migration
## What does this migration do?
This migration adjusts the [`target`](https://www.typescriptlang.org/v2/en/tsconfig#target) and [`module`](https://www.typescriptlang.org/v2/en/tsconfig#module) settings within the [TypeScript configuration files](guide/typescript-configuration) for the workspace.
The changes to each option vary based on the builder or command that uses the TypeScript configuration file.
Unless otherwise noted, changes are only made if the existing value was not changed since the project was created.
This process helps ensure that intentional changes to the options are kept in place.
TypeScript Configuration File(s) | Changed Property | Existing Value | New Value
------------- | ------------- | ------------- | ------------- | -------------
`<workspace base>/tsconfig.base.json` | `"module"` | `"esnext"` | `"es2020"`
Used in `browser` builder options (`ng build` for applications) | `"module"` | `"esnext"` | `"es2020"`
Used in `ng-packgr` builder options (`ng build` for libraries) | `"module"` | `"esnext"` | `"es2020"`
Used in `karma` builder options (`ng test` for applications) | `"module"` | `"esnext"` | `"es2020"`
Used in `server` builder options (universal) | `"module"` | `"commonjs"` | _removed_
Used in `server` builder options (universal) | `"target"` | _any_ | `"es2016"`
Used in `protractor` builder options (`ng e2e` for applications) | `"target"` | `"es5"` | `"es2018"`
## Why is this migration necessary?
This migration provides improvements to the long-term supportability of projects by updating the projects to use recommended best practice compilation options.
For the functionality that executes on Node.js, such as Universal and Protractor, the new settings provide performance and troubleshooting benefits as well.
The minimum Node.js version for the Angular CLI (v10.13) supports features in ES2018 and earlier.
By targeting later ES versions, the compiler transforms less code and can use newer features directly.
Since zone.js does not support native `async` and `await`, the universal builds still target ES2016.
## Why `"es2020"` instead of `"esnext"`?
In TypeScript 3.9, the behavior of the TypeScript compiler controlled by `module` is the same with both `"esnext"` and `"es2020"` values.
This behavior can change in the future, because the `"esnext"` option could evolve in a backwards incompatible ways, resulting in build-time or run-time errors during a TypeScript update.
As a result, code can become unstable. Using the `"es2020"` option mitigates this risk.

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# Update `module` and `target` compiler options migration # Actualizar las opciones del compilador `module` y `target` en la migración
## What does this migration do? ## ¿Qué hace esta migración?
This migration adjusts the [`target`](https://www.typescriptlang.org/v2/en/tsconfig#target) and [`module`](https://www.typescriptlang.org/v2/en/tsconfig#module) settings within the [TypeScript configuration files](guide/typescript-configuration) for the workspace. Esta migración ajusta la configuración de [`target`](https://www.typescriptlang.org/tsconfig#target) y [`module`](https://www.typescriptlang.org/v2/en/tsconfig#module) dentro de [los archivos de configuración de TypeScript](guide/typescript-configuration) para el espacio de trabajo.
The changes to each option vary based on the builder or command that uses the TypeScript configuration file. Los cambios en cada opción varían según el constructor o comando que usa el archivo de configuración de TypeScript. A menos que se indique lo contrario, los cambios solo se realizan si el valor existente no se modificó desde que se creó el proyecto. Este proceso ayuda a garantizar que se mantengan los cambios intencionales en las opciones.
Unless otherwise noted, changes are only made if the existing value was not changed since the project was created.
This process helps ensure that intentional changes to the options are kept in place.
TypeScript Configuration File(s) | Changed Property | Existing Value | New Value Archivo(s) de configuración de TypeScript | Propiedad Cambiada | Valor existente | Nuevo Valor
------------- | ------------- | ------------- | ------------- | ------------- ------------- | ------------- | ------------- | ------------- | -------------
`<workspace base>/tsconfig.base.json` | `"module"` | `"esnext"` | `"es2020"` `<espacio de trabajo>/tsconfig.base.json` | `"module"` | `"esnext"` | `"es2020"`
Used in `browser` builder options (`ng build` for applications) | `"module"` | `"esnext"` | `"es2020"` Utilizado en las opciones del constructor de `browser` (`ng build` para aplicaciones) | `"module"` | `"esnext"` | `"es2020"`
Used in `ng-packgr` builder options (`ng build` for libraries) | `"module"` | `"esnext"` | `"es2020"` Utilizado en las opciones del constructor de `ng-packgr` (`ng build` para librerías) | `"module"` | `"esnext"` | `"es2020"`
Used in `karma` builder options (`ng test` for applications) | `"module"` | `"esnext"` | `"es2020"` Utilizado en las opciones del constructor de `karma` (`ng test` para aplicaciones) | `"module"` | `"esnext"` | `"es2020"`
Used in `server` builder options (universal) | `"module"` | `"commonjs"` | _removed_ Utilizado en las opciones (universales) del constructor de `server` | `"module"` | `"commonjs"` | _removed_
Used in `server` builder options (universal) | `"target"` | _any_ | `"es2016"` Utilizado en las opciones (universales) del constructor de `server` | `"target"` | _any_ | `"es2016"`
Used in `protractor` builder options (`ng e2e` for applications) | `"target"` | `"es5"` | `"es2018"` Utilizado en las opciones del constructor de `protractor` (`ng e2e` para aplicaciones) | `"target"` | `"es5"` | `"es2018"`
## Why is this migration necessary? ## ¿Por qué es necesaria esta migración?
This migration provides improvements to the long-term supportability of projects by updating the projects to use recommended best practice compilation options. Esta migración proporciona mejoras en la compatibilidad a largo plazo de los proyectos mediante la actualización de los proyectos utilizando las buenas prácticas recomendadas en las opciones de compilación.
For the functionality that executes on Node.js, such as Universal and Protractor, the new settings provide performance and troubleshooting benefits as well. Para la funcionalidad que se ejecuta en Node.js, como Universal y Protractor, las nuevas configuraciones también brindan beneficios de rendimiento y resolución de problemas.
The minimum Node.js version for the Angular CLI (v10.13) supports features in ES2018 and earlier. La versión mínima de Node.js para Angular CLI (v10.13) admite funciones en ES2018 y versiones anteriores.
By targeting later ES versions, the compiler transforms less code and can use newer features directly. Al apuntar a versiones posteriores de ES, el compilador transforma menos código y puede usar funciones más nuevas directamente.
Since zone.js does not support native `async` and `await`, the universal builds still target ES2016. Dado que zone.js no admite `async` y `await` de forma nativa, las compilaciones universales todavía apuntan a ES2016.
## Why `"es2020"` instead of `"esnext"`? ## ¿Por qué `"es2020"` en lugar de `"esnext"`?
In TypeScript 3.9, the behavior of the TypeScript compiler controlled by `module` is the same with both `"esnext"` and `"es2020"` values. En TypeScript 3.9, el comportamiento del compilador TypeScript controlado por `module` es el mismo con los valores `"esnext"` y `"es2020"`.
This behavior can change in the future, because the `"esnext"` option could evolve in a backwards incompatible ways, resulting in build-time or run-time errors during a TypeScript update. Este comportamiento puede cambiar en el futuro, porque la opción `"esnext"` podría evolucionar de manera incompatible hacia atrás, lo que resultaría en errores en tiempo de compilación o de ejecución durante una actualización de TypeScript.
As a result, code can become unstable. Using the `"es2020"` option mitigates this risk. Como resultado, el código puede volverse inestable. El uso de la opción `"es2020"` mitiga este riesgo.