diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb975b5..e4d72ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Add `getAllSources()` method to `SupportCodeLibrary` ([#34r](https://github.com/cucumber/javascript-core/pull/34))
 
 ## [0.8.0] - 2025-11-25
 ### Changed
diff --git a/cucumber-core.api.md b/cucumber-core.api.md
index 2241a32..b66b0bf 100644
--- a/cucumber-core.api.md
+++ b/cucumber-core.api.md
@@ -196,6 +196,7 @@ export interface SupportCodeLibrary {
     findAllStepsBy(text: string): ReadonlyArray<MatchedStep>;
     getAllAfterAllHooks(): ReadonlyArray<DefinedTestRunHook>;
     getAllBeforeAllHooks(): ReadonlyArray<DefinedTestRunHook>;
+    getAllSources(): ReadonlyArray<SourceReference>;
     getExpressionGenerator(): CucumberExpressionGenerator;
     toEnvelopes(): ReadonlyArray<Envelope>;
 }
diff --git a/src/SupportCodeLibraryImpl.ts b/src/SupportCodeLibraryImpl.ts
index 20d5c14..88e92ef 100644
--- a/src/SupportCodeLibraryImpl.ts
+++ b/src/SupportCodeLibraryImpl.ts
@@ -1,4 +1,5 @@
 import { CucumberExpressionGenerator, ParameterTypeRegistry } from '@cucumber/cucumber-expressions'
+import { SourceReference } from '@cucumber/messages'
 
 import {
   DefinedParameterType,
@@ -61,6 +62,17 @@ export class SupportCodeLibraryImpl implements SupportCodeLibrary {
     })
   }
 
+  getAllSources(): ReadonlyArray<SourceReference> {
+    return [
+      ...this.parameterTypes.map((pt) => pt.sourceReference),
+      ...this.steps.map((step) => step.sourceReference),
+      ...this.beforeHooks.map((hook) => hook.sourceReference),
+      ...this.afterHooks.map((hook) => hook.sourceReference),
+      ...this.beforeAllHooks.map((hook) => hook.sourceReference),
+      ...this.afterAllHooks.map((hook) => hook.sourceReference),
+    ]
+  }
+
   getAllBeforeAllHooks(): ReadonlyArray<DefinedTestRunHook> {
     return [...this.beforeAllHooks]
   }
diff --git a/src/buildSupportCode.spec.ts b/src/buildSupportCode.spec.ts
index 9970c0a..2a316db 100644
--- a/src/buildSupportCode.spec.ts
+++ b/src/buildSupportCode.spec.ts
@@ -16,7 +16,7 @@ describe('buildSupportCode', () => {
   describe('test case hooks', () => {
     let library: SupportCodeLibrary
     beforeEach(() => {
-      library = buildSupportCode({ newId: IdGenerator.incrementing() })
+      library = buildSupportCode({ newId })
         .beforeHook({
           name: 'general setup',
           fn: sinon.stub(),
@@ -348,7 +348,7 @@ describe('buildSupportCode', () => {
   describe('test run hooks', () => {
     let library: SupportCodeLibrary
     beforeEach(() => {
-      library = buildSupportCode({ newId: IdGenerator.incrementing() })
+      library = buildSupportCode({ newId })
         .beforeAllHook({
           name: 'setup 1',
           fn: sinon.stub(),
@@ -423,4 +423,55 @@ describe('buildSupportCode', () => {
       ])
     })
   })
+
+  describe('sources', () => {
+    it('should return all source references from parameter types, steps, and hooks', () => {
+      const library = buildSupportCode({ newId })
+        .parameterType({
+          name: 'custom',
+          regexp: /\d+/,
+          sourceReference: { uri: 'params.ts', location: { line: 1, column: 1 } },
+        })
+        .step({
+          pattern: 'a step',
+          fn: sinon.stub(),
+          sourceReference: { uri: 'steps.js', location: { line: 1, column: 1 } },
+        })
+        .beforeHook({
+          fn: sinon.stub(),
+          sourceReference: { uri: 'hooks.ts', location: { line: 2, column: 1 } },
+        })
+        .afterHook({
+          fn: sinon.stub(),
+          sourceReference: { uri: 'hooks.ts', location: { line: 3, column: 1 } },
+        })
+        .beforeAllHook({
+          fn: sinon.stub(),
+          sourceReference: { uri: 'setup.js', location: { line: 1, column: 1 } },
+        })
+        .afterAllHook({
+          fn: sinon.stub(),
+          sourceReference: { uri: 'teardown.js', location: { line: 1, column: 1 } },
+        })
+        .build()
+
+      const sources = library.getAllSources()
+
+      expect(sources).to.have.lengthOf(6)
+      expect(sources).to.deep.include({ uri: 'params.ts', location: { line: 1, column: 1 } })
+      expect(sources).to.deep.include({ uri: 'steps.js', location: { line: 1, column: 1 } })
+      expect(sources).to.deep.include({ uri: 'hooks.ts', location: { line: 2, column: 1 } })
+      expect(sources).to.deep.include({ uri: 'hooks.ts', location: { line: 3, column: 1 } })
+      expect(sources).to.deep.include({ uri: 'setup.js', location: { line: 1, column: 1 } })
+      expect(sources).to.deep.include({ uri: 'teardown.js', location: { line: 1, column: 1 } })
+    })
+
+    it('should return empty array when there is no support code', () => {
+      const library = buildSupportCode({ newId }).build()
+
+      const sources = library.getAllSources()
+
+      expect(sources).to.deep.equal([])
+    })
+  })
 })
diff --git a/src/types.ts b/src/types.ts
index 1741e45..b21d5cb 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -336,6 +336,10 @@ export interface SupportCodeLibrary {
    * Find all step definitions whose expression is a match for the given text
    */
   findAllStepsBy(text: string): ReadonlyArray<MatchedStep>
+  /**
+   * Get all source references from across all support code
+   */
+  getAllSources(): ReadonlyArray<SourceReference>
   /**
    * Get a generator for Cucumber Expressions based on the currently defined parameter types
    */