初始化环境文件

node_modules/@smithy/core/README.md

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+# @smithy/core
+
+[![NPM version](https://img.shields.io/npm/v/@smithy/core/latest.svg)](https://www.npmjs.com/package/@smithy/core)
+[![NPM downloads](https://img.shields.io/npm/dm/@smithy/core.svg)](https://www.npmjs.com/package/@smithy/core)
+
+### :warning: Internal API :warning:
+
+> This is an internal package.
+> That means this is used as a dependency for other, public packages, but
+> should not be taken directly as a dependency in your application's `package.json`.
+
+> If you are updating the version of this package, for example to bring in a
+> bug-fix, you should do so by updating your application lockfile with
+> e.g. `npm up @scope/package` or equivalent command in another
+> package manager, rather than taking a direct dependency.
+
+---
+
+This package provides common or core functionality for generic Smithy clients.
+
+You do not need to explicitly install this package, since it will be installed during code generation if used.
+
+## Development of `@smithy/core` submodules
+
+Core submodules are organized for distribution via the `package.json` `exports` field.
+
+`exports` is supported by default by the latest Node.js, webpack, and esbuild. For react-native, it can be
+enabled via instructions found at [reactnative.dev/blog](https://reactnative.dev/blog/2023/06/21/package-exports-support), but we also provide a compatibility redirect.
+
+Think of `@smithy/core` as a mono-package within the monorepo.
+It preserves the benefits of modularization, for example to optimize Node.js initialization speed,
+while making it easier to have a consistent version of core dependencies, reducing package sprawl when
+installing a Smithy runtime client.
+
+### Guide for submodules
+
+- Each `index.ts` file corresponding to the pattern `./src/submodules/<MODULE_NAME>/index.ts` will be
+  published as a separate `dist-cjs` bundled submodule index using the `Inliner.js` build script.
+- create a folder as `./src/submodules/<SUBMODULE>` including an `index.ts` file and a `README.md` file.
+  - The linter will throw an error on missing submodule metadata in `package.json` and the various `tsconfig.json` files, but it will automatically fix them if possible.
+- a submodule is equivalent to a standalone `@smithy/<pkg>` package in that importing it in Node.js will resolve a separate bundle.
+- submodules may not relatively import files from other submodules. Instead, directly use the `@scope/pkg/submodule` name as the import.
+  - The linter will check for this and throw an error.
+- To the extent possible, correctly declaring submodule metadata is validated by the linter in `@smithy/core`.
+  The linter runs during `yarn build` and also as `yarn lint`.
+
+### When should I create an `@smithy/core/submodule` vs. `@smithy/new-package`?
+
+Keep in mind that the core package is installed by all downstream clients.
+
+If the component functionality is upstream of multiple clients, it is
+a good candidate for a core submodule. For example, if `middleware-retry` had been written
+after the support for submodules was added, it would have been a submodule.
+
+If the component's functionality is downstream of a client (rare), or only expected to be used by a very small
+subset of clients, it could be written as a standalone package.