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Apr 4, 2025
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docs: improve devEngines note #1535

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8e6a4ca
fix: improve `devEngines` note
styfle Apr 2, 2025
e012ff6
fix: revise note
styfle Apr 2, 2025
ffbb248
apply suggestion from ljharb
styfle Apr 4, 2025
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2 changes: 1 addition & 1 deletion content/cli/v10/configuring-npm/package-json.mdx
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Expand Up @@ -903,7 +903,7 @@ The `devEngines` field aids engineers working on a codebase to all be using the

You can specify a `devEngines` property in your `package.json` which will run before `install`, `ci`, and `run` commands.

> Note: `engines` and `devEngines` differ in object shape. They also function very differently. `engines` is designed to alert the user when a dependency uses a differening npm or node version that the project it's being used in, whereas `devEngines` is used to alert people interacting with the source code of a project.
> Note: `devEngines` and `engines` differ in object shape and functionality. `devEngines` is used to declare the intended runtime (node, etc) and/or package manager (npm, etc) to be used by developers working directly in the source code of a project, whereas `engines` is intended for a package to declare the node and/or npm versions it is compatible with.

The supported keys under the `devEngines` property are `cpu`, `os`, `libc`, `runtime`, and `packageManager`. Each property can be an object or an array of objects. Objects must contain `name`, and optionally can specify `version`, and `onFail`. `onFail` can be `warn`, `error`, or `ignore`, and if left undefined is of the same value as `error`. `npm` will assume that you're running with `node`. Here's an example of a project that will fail if the environment is not `node` and `npm`. If you set `runtime.name` or `packageManager.name` to any other string, it will fail within the npm CLI.

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2 changes: 1 addition & 1 deletion content/cli/v11/configuring-npm/package-json.mdx
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Expand Up @@ -928,7 +928,7 @@ The `devEngines` field aids engineers working on a codebase to all be using the

You can specify a `devEngines` property in your `package.json` which will run before `install`, `ci`, and `run` commands.

> Note: `engines` and `devEngines` differ in object shape. They also function very differently. `engines` is designed to alert the user when a dependency uses a differening npm or node version that the project it's being used in, whereas `devEngines` is used to alert people interacting with the source code of a project.
> Note: `devEngines` and `engines` differ in object shape and functionality. `devEngines` is used to declare the intended runtime (node, etc) and/or package manager (npm, etc) to be used by developers working directly in the source code of a project, whereas `engines` is intended for a package to declare the node and/or npm versions it is compatible with.

The supported keys under the `devEngines` property are `cpu`, `os`, `libc`, `runtime`, and `packageManager`. Each property can be an object or an array of objects. Objects must contain `name`, and optionally can specify `version`, and `onFail`. `onFail` can be `warn`, `error`, or `ignore`, and if left undefined is of the same value as `error`. `npm` will assume that you're running with `node`. Here's an example of a project that will fail if the environment is not `node` and `npm`. If you set `runtime.name` or `packageManager.name` to any other string, it will fail within the npm CLI.

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