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feat(tools-react-native): add additional platform helpers #3490

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merged 8 commits into from
Jan 25, 2025
Merged

feat(tools-react-native): add additional platform helpers #3490

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d3a00d9
add additional platform helpers to tools-react-native
JasonVMo Jan 22, 2025
b9f3993
docs(changeset): Add additional platform helpers for react-native rel…
JasonVMo Jan 22, 2025
2ee4917
update readme file for tools-react-native
JasonVMo Jan 22, 2025
e975cfd
add visionos as a valid platform in tools-react-native
JasonVMo Jan 22, 2025
12e3867
remove package lookup table and supporting functions, will do this an…
JasonVMo Jan 23, 2025
e7e80aa
update readme
JasonVMo Jan 23, 2025
f4b7ce0
Merge remote-tracking branch 'upstream/main' into rn-platform-utils
JasonVMo Jan 25, 2025
84b9c62
rename parsePlatformValue to tryParsePlatform
JasonVMo Jan 25, 2025
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6 changes: 6 additions & 0 deletions .changeset/short-singers-doubt.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
---
"@rnx-kit/tools-react-native": patch
---

Add additional platform helpers for react-native related to platform names and
suffixes
29 changes: 16 additions & 13 deletions packages/tools-react-native/README.md
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Expand Up @@ -24,18 +24,21 @@ import * as platformTools from "@rnx-kit/tools-react-native/platform";
| -------- | ------------ | ----------------------------------------- |
| platform | AllPlatforms | List of supported react-native platforms. |

| Category | Function | Description |
| -------- | ------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| context | `loadContext(projectRoot)` | Equivalent to calling `loadConfig()` from `@react-native-community/cli`, but the result is cached for faster subsequent accesses. |
| context | `loadContextAsync(projectRoot)` | Equivalent to calling `loadConfigAsync()` (with fallback to `loadConfig()`) from `@react-native-community/cli`, but the result is cached for faster subsequent accesses. |
| context | `resolveCommunityCLI(root, reactNativePath)` | Finds path to `@react-native-community/cli`. |
| metro | `findMetroPath(projectRoot)` | Finds the installation path of Metro. |
| metro | `getMetroVersion(projectRoot)` | Returns Metro version number. |
| metro | `requireModuleFromMetro(moduleName, fromDir)` | Imports specified module starting from the installation directory of the currently used `metro` version. |
| platform | `expandPlatformExtensions(platform, extensions)` | Returns a list of extensions that should be tried for the target platform in prioritized order. |
| platform | `getAvailablePlatforms(startDir)` | Returns a map of available React Native platforms. The result is cached. |
| platform | `getAvailablePlatformsUncached(startDir, platformMap)` | Returns a map of available React Native platforms. The result is NOT cached. |
| platform | `parsePlatform(val)` | Parse a string to ensure it maps to a valid react-native platform. |
| platform | `platformExtensions(platform)` | Returns file extensions that can be mapped to the target platform. |
| Category | Function | Description |
| -------- | ------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| context | `loadContext(projectRoot)` | Equivalent to calling `loadConfig()` from `@react-native-community/cli`, but the result is cached for faster subsequent accesses. |
| context | `loadContextAsync(projectRoot)` | Equivalent to calling `loadConfigAsync()` (with fallback to `loadConfig()`) from `@react-native-community/cli`, but the result is cached for faster subsequent accesses. |
| context | `resolveCommunityCLI(root, reactNativePath)` | Finds path to `@react-native-community/cli`. |
| metro | `findMetroPath(projectRoot)` | Finds the installation path of Metro. |
| metro | `getMetroVersion(projectRoot)` | Returns Metro version number. |
| metro | `requireModuleFromMetro(moduleName, fromDir)` | Imports specified module starting from the installation directory of the currently used `metro` version. |
| platform | `expandPlatformExtensions(platform, extensions)` | Returns a list of extensions that should be tried for the target platform in prioritized order. |
| platform | `getAvailablePlatforms(startDir)` | Returns a map of available React Native platforms. The result is cached. |
| platform | `getAvailablePlatformsUncached(startDir, platformMap)` | Returns a map of available React Native platforms. The result is NOT cached. |
| platform | `getModuleSuffixes(platform, appendEmpty)` | Get the module suffixes array for a given platform, suitable for use with TypeScript's moduleSuffixes setting in the form of ['.ios', '.native', ''] or ['.windows', '.win', '.native', ''] or similar |
| platform | `parsePlatform(val)` | Parse a string to ensure it maps to a valid react-native platform. |
| platform | `platformExtensions(platform)` | Returns file extensions that can be mapped to the target platform. |
| platform | `platformValues()` | |
| platform | `tryParsePlatform(val)` | |

<!-- @rnx-kit/api end -->
3 changes: 3 additions & 0 deletions packages/tools-react-native/src/index.ts
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Expand Up @@ -13,7 +13,10 @@ export {
expandPlatformExtensions,
getAvailablePlatforms,
getAvailablePlatformsUncached,
getModuleSuffixes,
parsePlatform,
platformExtensions,
platformValues,
tryParsePlatform,
} from "./platform";
export type { AllPlatforms } from "./platform";
67 changes: 56 additions & 11 deletions packages/tools-react-native/src/platform.ts
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Expand Up @@ -6,7 +6,23 @@ import { readReactNativeConfig } from "./context";
/**
* List of supported react-native platforms.
*/
export type AllPlatforms = "android" | "ios" | "macos" | "win32" | "windows";
export type AllPlatforms =
| "android"
| "ios"
| "macos"
| "win32"
| "windows"
| "visionos";

// Possible values for AllPlatforms
const allValues: AllPlatforms[] = [
"android",
"ios",
"macos",
"win32",
"windows",
"visionos",
];

/**
* Returns a list of extensions that should be tried for the target platform in
Expand All @@ -30,6 +46,25 @@ export function expandPlatformExtensions(
return expanded;
}

/**
* Get the module suffixes array for a given platform, suitable for use with TypeScript's moduleSuffixes setting
* in the form of ['.ios', '.native', ''] or ['.windows', '.win', '.native', ''] or similar
*
* @param platform platform to get module suffixes for
* @param appendEmpty finish the suffixes with an empty entry, required for typescript usage
* @returns an array of suffixes to try to match a module to in order of priority
*/
export function getModuleSuffixes(
platform: AllPlatforms,
appendEmpty = true
): string[] {
const extensions = platformExtensions(platform).map((ext) => `.${ext}`);
if (appendEmpty) {
extensions.push("");
}
return extensions;
}

/**
* Returns a map of available React Native platforms. The result is NOT cached.
* @param startDir The directory to look for react-native platforms from
Expand Down Expand Up @@ -134,22 +169,32 @@ export function platformExtensions(platform: string): string[] {
}
}

/**
* @returns the given string as a platform value or undefined if it is not a valid platform.
*/
export function tryParsePlatform(val: string): AllPlatforms | undefined {
return allValues.includes(val as AllPlatforms)
? (val as AllPlatforms)
: undefined;
}

/**
* Parse a string to ensure it maps to a valid react-native platform.
*
* @param val Input string
* @returns React-native platform name. Throws `Error` on failure.
*/
export function parsePlatform(val: string): AllPlatforms {
switch (val) {
case "android":
case "ios":
case "macos":
case "win32":
case "windows":
return val;

default:
throw new Error("Invalid platform '" + val + "'");
const platform = tryParsePlatform(val);
if (!platform) {
throw new Error(`Unknown platform '${val}'`);
}
return platform;
}

/**
* @returns List of all supported react-native platforms.
*/
export function platformValues(): readonly AllPlatforms[] {
return allValues;
}
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