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import { describe, it, expect } from 'vitest';
import type { Node, Language } from '../src/types';
import type { ResolutionContext, UnresolvedRef } from '../src/resolution/types';
import { reactNativeBridgeResolver } from '../src/resolution/frameworks/react-native';
/**
* Mock ResolutionContext for the React Native bridge resolver.
*/
function makeContext(nodes: Node[], fileContents: Record<string, string> = {}): ResolutionContext {
const byName = new Map<string, Node[]>();
for (const n of nodes) {
const arr = byName.get(n.name);
if (arr) arr.push(n);
else byName.set(n.name, [n]);
}
// Files = union of node files + any extra fileContents keys (for files that
// have content like .mm bridge declarations but no extracted nodes yet).
const allFiles = new Set<string>(
[...nodes.map((n) => n.filePath), ...Object.keys(fileContents)]
);
return {
getNodesInFile: (fp) => nodes.filter((n) => n.filePath === fp),
getNodesByName: (name) => byName.get(name) ?? [],
getNodesByQualifiedName: () => { throw new Error('not used'); },
getNodesByKind: (kind) => nodes.filter((n) => n.kind === kind),
getNodesByLowerName: () => { throw new Error('not used'); },
fileExists: (fp) => allFiles.has(fp),
readFile: (fp) => fileContents[fp] ?? null,
getProjectRoot: () => '/test',
getAllFiles: () => Array.from(allFiles),
getImportMappings: () => [],
};
}
function method(
name: string,
language: Language,
filePath: string,
startLine = 10
): Node {
return {
id: `${language}:${filePath}:${name}:${startLine}`,
kind: 'method',
name,
qualifiedName: `${filePath}::${name}`,
filePath,
language,
startLine,
endLine: startLine + 5,
startColumn: 0,
endColumn: 0,
updatedAt: Date.now(),
} as Node;
}
function ref(name: string, language: Language, filePath: string): UnresolvedRef {
return {
fromNodeId: `caller:${filePath}`,
referenceName: name,
referenceKind: 'calls',
line: 1,
column: 0,
filePath,
language,
};
}
describe('React Native bridge resolver', () => {
describe('detect()', () => {
it('returns true when package.json declares react-native', () => {
const ctx = makeContext([], {
'package.json':
'{"name":"x","dependencies":{"react-native":"^0.73.0"}}',
});
expect(reactNativeBridgeResolver.detect(ctx)).toBe(true);
});
it('returns true when an ObjC file uses RCT_EXPORT_MODULE', () => {
const ctx = makeContext([], {
'NativeFoo.mm': '@implementation Foo\nRCT_EXPORT_MODULE()\n@end',
});
expect(reactNativeBridgeResolver.detect(ctx)).toBe(true);
});
it('returns true when a TS file uses TurboModuleRegistry', () => {
const ctx = makeContext([], {
'NativeFoo.ts':
"import { TurboModuleRegistry } from 'react-native';\n" +
"export default TurboModuleRegistry.getEnforcing<Spec>('Foo');",
});
expect(reactNativeBridgeResolver.detect(ctx)).toBe(true);
});
it('returns false when none of the RN signals are present', () => {
const ctx = makeContext([method('hi', 'objc', 'X.m')]);
expect(reactNativeBridgeResolver.detect(ctx)).toBe(false);
});
});
describe('legacy bridge — ObjC side', () => {
it('resolves JS callsite via RCT_EXPORT_METHOD with default module name', () => {
// RCTGeolocation → module name 'Geolocation' (RCT prefix stripped).
const native = method('getCurrentPosition:', 'objc', 'RCTGeolocation.m');
const ctx = makeContext([native], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'RCTGeolocation.m':
'@implementation RCTGeolocation\n' +
'RCT_EXPORT_MODULE()\n' +
'RCT_EXPORT_METHOD(getCurrentPosition:(RCTResponseSenderBlock)cb) {}\n' +
'@end',
});
const result = reactNativeBridgeResolver.resolve(
ref('getCurrentPosition', 'javascript', 'App.js'),
ctx
);
expect(result?.targetNodeId).toBe(native.id);
expect(result?.resolvedBy).toBe('framework');
});
it('resolves via explicit module name in RCT_EXPORT_MODULE(name)', () => {
const native = method('startScan:', 'objc', 'Bluetooth.m');
const ctx = makeContext([native], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'Bluetooth.m':
'@implementation BluetoothImpl\n' +
'RCT_EXPORT_MODULE(BluetoothManager)\n' +
'RCT_EXPORT_METHOD(startScan:(RCTResponseSenderBlock)cb) {}\n' +
'@end',
});
const result = reactNativeBridgeResolver.resolve(
ref('startScan', 'javascript', 'App.js'),
ctx
);
expect(result?.targetNodeId).toBe(native.id);
});
it('resolves RCT_REMAP_METHOD with JS-name override', () => {
const native = method('doInternalCompute:', 'objc', 'Computer.m');
const ctx = makeContext([native], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'Computer.m':
'@implementation Computer\n' +
'RCT_EXPORT_MODULE()\n' +
'RCT_REMAP_METHOD(compute, doInternalCompute:(NSDictionary *)opts) {}\n' +
'@end',
});
const result = reactNativeBridgeResolver.resolve(
ref('compute', 'javascript', 'App.js'),
ctx
);
expect(result?.targetNodeId).toBe(native.id);
});
});
describe('legacy bridge — Java side', () => {
it('resolves @ReactMethod with getName() literal', () => {
const native = method('getCurrentPosition', 'java', 'GeolocationModule.java');
const ctx = makeContext([native], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'GeolocationModule.java':
'class GeolocationModule extends ReactContextBaseJavaModule {\n' +
' @Override public String getName() { return "Geolocation"; }\n' +
' @ReactMethod public void getCurrentPosition(Callback cb) {}\n' +
'}',
});
const result = reactNativeBridgeResolver.resolve(
ref('getCurrentPosition', 'javascript', 'App.js'),
ctx
);
expect(result?.targetNodeId).toBe(native.id);
});
it('resolves Kotlin @ReactMethod fun', () => {
const native = method('startScan', 'kotlin', 'BluetoothModule.kt');
const ctx = makeContext([native], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'BluetoothModule.kt':
'class BluetoothModule(ctx: ReactApplicationContext) : ReactContextBaseJavaModule(ctx) {\n' +
' override fun getName(): String = "BluetoothManager"\n' +
' @ReactMethod fun startScan(cb: Callback) {}\n' +
'}',
});
const result = reactNativeBridgeResolver.resolve(
ref('startScan', 'javascript', 'App.js'),
ctx
);
expect(result?.targetNodeId).toBe(native.id);
});
});
describe('TurboModule spec resolution', () => {
it('matches spec method to native ObjC implementation by name', () => {
// The Spec interface lists `getTotalLength`; ObjC has a method by the
// same first keyword. Bridge matches by name.
const native = method('getTotalLength:', 'objc', 'RNSVGRenderableManager.mm');
const ctx = makeContext([native], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'NativeSvgRenderableModule.ts':
"import { TurboModuleRegistry } from 'react-native';\n" +
'export interface Spec extends TurboModule {\n' +
' getTotalLength(tag: number): number;\n' +
' isPointInFill(tag: number, options?: object): boolean;\n' +
'}\n' +
"export default TurboModuleRegistry.getEnforcing<Spec>('RNSVGRenderableModule');",
});
const result = reactNativeBridgeResolver.resolve(
ref('getTotalLength', 'tsx', 'SvgComponent.tsx'),
ctx
);
expect(result?.targetNodeId).toBe(native.id);
});
it('returns null when spec method has no matching native impl', () => {
const ctx = makeContext([], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'NativeFoo.ts':
"import { TurboModuleRegistry } from 'react-native';\n" +
'export interface Spec extends TurboModule {\n' +
' thingThatDoesntExist(): void;\n' +
'}\n' +
"export default TurboModuleRegistry.getEnforcing<Spec>('Foo');",
});
const result = reactNativeBridgeResolver.resolve(
ref('thingThatDoesntExist', 'tsx', 'Caller.tsx'),
ctx
);
expect(result).toBeNull();
});
});
describe('qualified vs bare callsite names', () => {
it('handles bare method name (post receiver-strip)', () => {
const native = method('compute:', 'objc', 'Mod.m');
const ctx = makeContext([native], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'Mod.m':
'@implementation Mod\nRCT_EXPORT_MODULE()\nRCT_EXPORT_METHOD(compute:(NSDictionary *)x) {}\n@end',
});
expect(
reactNativeBridgeResolver.resolve(ref('compute', 'javascript', 'App.js'), ctx)
).not.toBeNull();
});
it('strips dot prefix on receiver-qualified callsite (NativeModules.Mod.compute → compute)', () => {
const native = method('compute:', 'objc', 'Mod.m');
const ctx = makeContext([native], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'Mod.m':
'@implementation Mod\nRCT_EXPORT_MODULE()\nRCT_EXPORT_METHOD(compute:(NSDictionary *)x) {}\n@end',
});
expect(
reactNativeBridgeResolver.resolve(
ref('NativeModules.Mod.compute', 'javascript', 'App.js'),
ctx
)
).not.toBeNull();
});
});
it('does not resolve native-language callers (resolver is JS-side only)', () => {
const native = method('compute:', 'objc', 'Mod.m');
const ctx = makeContext([native]);
expect(
reactNativeBridgeResolver.resolve(ref('compute', 'objc', 'OtherMod.m'), ctx)
).toBeNull();
});
describe('RCTEventEmitter built-ins blocklist', () => {
it('skips addListener / remove (every emitter exposes these — bridging them creates noise)', () => {
// A repo with RCTEventEmitter subclass: defines `addListener:` and
// `remove:` because that's what `[RCTEventEmitter addListener:]`
// requires. JS callers of `.addListener(...)` should NOT resolve
// here — they're hitting the JS-side `NativeEventEmitter`
// abstraction, not the native emitter directly.
const native1 = method('addListener:', 'objc', 'EventEmitter.m');
const native2 = method('remove:', 'objc', 'EventEmitter.m');
const ctx = makeContext([native1, native2], {
'package.json': '{"dependencies":{"react-native":"^0.73"}}',
'EventEmitter.m':
'@implementation EventEmitter\n' +
'RCT_EXPORT_MODULE()\n' +
'RCT_EXPORT_METHOD(addListener:(NSString *)eventName) {}\n' +
'RCT_EXPORT_METHOD(remove:(double)id) {}\n' +
'@end',
});
expect(
reactNativeBridgeResolver.resolve(ref('addListener', 'javascript', 'App.js'), ctx)
).toBeNull();
expect(
reactNativeBridgeResolver.resolve(ref('remove', 'typescript', 'App.ts'), ctx)
).toBeNull();
});
});
});