2 files changed, 360 insertions, 0 deletions
diff --git a/tools/ts/fixtures/intrinsics.d.ts b/tools/ts/fixtures/intrinsics.d.ts
new file mode 100644
index 0000000000..7a0b45ee52
--- /dev/null
+++ b/tools/ts/fixtures/intrinsics.d.ts
@@ -0,0 +1,85 @@
+/**
+ * Gecko XPCOM builtins and utility types.
+ */
+
+/**
+ * Generic IDs are created by most code which passes a nsID to js.
+ * https://searchfox.org/mozilla-central/source/js/xpconnect/src/XPCJSID.cpp#24
+ */
+interface nsID<uuid = string> {
+  readonly number: uuid;
+}
+
+/**
+ * In addition to nsID, interface IIDs support instanceof type guards,
+ * and expose constants defined on the class, including variants from enums.
+ * https://searchfox.org/mozilla-central/source/js/xpconnect/src/XPCJSID.cpp#44
+ */
+type nsJSIID<iface, enums = {}> = nsID & Constants<iface> & enums & {
+  new (_: never): void;
+  prototype: iface;
+}
+
+/** A union of all known IIDs. */
+type nsIID = nsIXPCComponents_Interfaces[keyof nsIXPCComponents_Interfaces];
+
+/** A generic to resolve QueryInterface return type from a nsID (or nsIID). */
+export type nsQIResult<iid> = iid extends { prototype: infer U } ? U : never;
+
+/** XPCOM inout param is passed in as a js object with a value property. */
+type InOutParam<T> = { value: T };
+
+/** XPCOM out param is written to the passed in object's value property. */
+type OutParam<T> = { value?: T };
+
+/** A named type for interfaces to inherit from enums. */
+type Enums<enums> = enums;
+
+/** Callable accepts either form of a [function] interface. */
+type Callable<iface> = iface | Extract<iface[keyof iface], Function>
+
+/** Picks only const number properties from T. */
+type Constants<T> = { [K in keyof T as IfConst<K, T[K]>]: T[K] };
+
+/** Resolves only for keys K whose corresponding type T is a narrow number. */
+type IfConst<K, T> = T extends number ? (number extends T ? never : K) : never;
+
+declare global {
+  // Until we have [ChromeOnly] webidl.
+  interface BrowsingContext {}
+  interface ContentFrameMessageManager {}
+  interface DOMRequest {}
+  interface FrameLoader {}
+  interface JSProcessActorChild {}
+  interface JSProcessActorParent {}
+  interface TreeColumn {}
+  interface WebExtensionContentScript {}
+  interface WebExtensionPolicy {}
+  interface WindowGlobalParent {}
+  interface WindowContext {}
+  interface XULTreeElement {}
+}
+
+// Non-scriptable interfaces referenced from scriptable ones.
+interface nsIAsyncVerifyRedirectReadyCallback {}
+interface nsICRLiteTimestamp {}
+interface nsIInputAvailableCallback {}
+interface nsIScriptElement {}
+interface nsIThreadObserver {}
+interface nsIUDPSocketSyncListener {}
+interface nsIWebAuthnRegisterArgs {}
+interface nsIWebAuthnRegisterPromise {}
+interface nsIWebAuthnSignArgs {}
+interface nsIWebAuthnSignPromise {}
+interface nsIXPCScriptable {}
+
+// Typedefs useful as a quick reference in method signatures.
+type double = number;
+type float = number;
+type i16 = number;
+type i32 = number;
+type i64 = number;
+type u16 = number;
+type u32 = number;
+type u64 = number;
+type u8 = number;
diff --git a/tools/ts/fixtures/xpctest.d.ts b/tools/ts/fixtures/xpctest.d.ts
new file mode 100644
index 0000000000..6b2863a656
--- /dev/null
+++ b/tools/ts/fixtures/xpctest.d.ts
@@ -0,0 +1,275 @@
+/**
+ * NOTE: Do not modify this file by hand.
+ * Content was generated from source XPCOM .idl files.
+ */
+
+declare global {
+
+// https://searchfox.org/mozilla-central/source/js/xpconnect/tests/idl/xpctest_attributes.idl
+
+interface nsIXPCTestObjectReadOnly extends nsISupports {
+  readonly strReadOnly: string;
+  readonly boolReadOnly: boolean;
+  readonly shortReadOnly: i16;
+  readonly longReadOnly: i32;
+  readonly floatReadOnly: float;
+  readonly charReadOnly: string;
+  readonly timeReadOnly: PRTime;
+}
+
+interface nsIXPCTestObjectReadWrite extends nsISupports {
+  stringProperty: string;
+  booleanProperty: boolean;
+  shortProperty: i16;
+  longProperty: i32;
+  floatProperty: float;
+  charProperty: string;
+  timeProperty: PRTime;
+}
+
+// https://searchfox.org/mozilla-central/source/js/xpconnect/tests/idl/xpctest_bug809674.idl
+
+interface nsIXPCTestBug809674 extends nsISupports {
+  addArgs(x: u32, y: u32): u32;
+  addSubMulArgs(x: u32, y: u32, subOut: OutParam<u32>, mulOut: OutParam<u32>): u32;
+  addVals(x: any, y: any): any;
+  methodNoArgs(): u32;
+  methodNoArgsNoRetVal(): void;
+  addMany(x1: u32, x2: u32, x3: u32, x4: u32, x5: u32, x6: u32, x7: u32, x8: u32): u32;
+  valProperty: any;
+  uintProperty: u32;
+  methodWithOptionalArgc(): void;
+}
+
+// https://searchfox.org/mozilla-central/source/js/xpconnect/tests/idl/xpctest_cenums.idl
+
+}  // global
+
+declare namespace nsIXPCTestCEnums {
+
+enum testFlagsExplicit {
+  shouldBe1Explicit = 1,
+  shouldBe2Explicit = 2,
+  shouldBe4Explicit = 4,
+  shouldBe8Explicit = 8,
+  shouldBe12Explicit = 12,
+}
+
+enum testFlagsImplicit {
+  shouldBe0Implicit = 0,
+  shouldBe1Implicit = 1,
+  shouldBe2Implicit = 2,
+  shouldBe3Implicit = 3,
+  shouldBe5Implicit = 5,
+  shouldBe6Implicit = 6,
+  shouldBe2AgainImplicit = 2,
+  shouldBe3AgainImplicit = 3,
+}
+
+}
+
+declare global {
+
+interface nsIXPCTestCEnums extends nsISupports, Enums<typeof nsIXPCTestCEnums.testFlagsExplicit & typeof nsIXPCTestCEnums.testFlagsImplicit> {
+  readonly testConst: 1;
+
+  testCEnumInput(abc: nsIXPCTestCEnums.testFlagsExplicit): void;
+  testCEnumOutput(): nsIXPCTestCEnums.testFlagsExplicit;
+}
+
+// https://searchfox.org/mozilla-central/source/js/xpconnect/tests/idl/xpctest_interfaces.idl
+
+interface nsIXPCTestInterfaceA extends nsISupports {
+  name: string;
+}
+
+interface nsIXPCTestInterfaceB extends nsISupports {
+  name: string;
+}
+
+interface nsIXPCTestInterfaceC extends nsISupports {
+  someInteger: i32;
+}
+
+// https://searchfox.org/mozilla-central/source/js/xpconnect/tests/idl/xpctest_params.idl
+
+interface nsIXPCTestParams extends nsISupports {
+  testBoolean(a: boolean, b: InOutParam<boolean>): boolean;
+  testOctet(a: u8, b: InOutParam<u8>): u8;
+  testShort(a: i16, b: InOutParam<i16>): i16;
+  testLong(a: i32, b: InOutParam<i32>): i32;
+  testLongLong(a: i64, b: InOutParam<i64>): i64;
+  testUnsignedShort(a: u16, b: InOutParam<u16>): u16;
+  testUnsignedLong(a: u32, b: InOutParam<u32>): u32;
+  testUnsignedLongLong(a: u64, b: InOutParam<u64>): u64;
+  testFloat(a: float, b: InOutParam<float>): float;
+  testDouble(a: double, b: InOutParam<float>): double;
+  testChar(a: string, b: InOutParam<string>): string;
+  testString(a: string, b: InOutParam<string>): string;
+  testWchar(a: string, b: InOutParam<string>): string;
+  testWstring(a: string, b: InOutParam<string>): string;
+  testAString(a: string, b: InOutParam<string>): string;
+  testAUTF8String(a: string, b: InOutParam<string>): string;
+  testACString(a: string, b: InOutParam<string>): string;
+  testJsval(a: any, b: InOutParam<any>): any;
+  testShortSequence(a: i16[], b: InOutParam<i16[]>): i16[];
+  testDoubleSequence(a: double[], b: InOutParam<double[]>): double[];
+  testInterfaceSequence(a: nsIXPCTestInterfaceA[], b: InOutParam<nsIXPCTestInterfaceA[]>): nsIXPCTestInterfaceA[];
+  testAStringSequence(a: string[], b: InOutParam<string[]>): string[];
+  testACStringSequence(a: string[], b: InOutParam<string[]>): string[];
+  testJsvalSequence(a: any[], b: InOutParam<any[]>): any[];
+  testSequenceSequence(a: i16[][], b: InOutParam<i16[][]>): i16[][];
+  testOptionalSequence(arr?: u8[]): u8[];
+  testShortArray(aLength: u32, a: i16[], bLength: InOutParam<u32>, b: InOutParam<i16[]>, rvLength: OutParam<u32>): OutParam<i16[]>;
+  testDoubleArray(aLength: u32, a: double[], bLength: InOutParam<u32>, b: InOutParam<double[]>, rvLength: OutParam<u32>): OutParam<double[]>;
+  testStringArray(aLength: u32, a: string[], bLength: InOutParam<u32>, b: InOutParam<string[]>, rvLength: OutParam<u32>): OutParam<string[]>;
+  testWstringArray(aLength: u32, a: string[], bLength: InOutParam<u32>, b: InOutParam<string[]>, rvLength: OutParam<u32>): OutParam<string[]>;
+  testInterfaceArray(aLength: u32, a: nsIXPCTestInterfaceA[], bLength: InOutParam<u32>, b: InOutParam<nsIXPCTestInterfaceA[]>, rvLength: OutParam<u32>): OutParam<nsIXPCTestInterfaceA[]>;
+  testByteArrayOptionalLength(a: u8[], aLength?: u32): u32;
+  testSizedString(aLength: u32, a: string, bLength: InOutParam<u32>, b: InOutParam<string>, rvLength: OutParam<u32>): OutParam<string>;
+  testSizedWstring(aLength: u32, a: string, bLength: InOutParam<u32>, b: InOutParam<string>, rvLength: OutParam<u32>): OutParam<string>;
+  testJsvalArray(aLength: u32, a: any[], bLength: InOutParam<u32>, b: InOutParam<any[]>, rvLength: OutParam<u32>): OutParam<any[]>;
+  testOutAString(o: OutParam<string>): void;
+  testStringArrayOptionalSize(a: string[], aLength?: u32): string;
+  testOmittedOptionalOut(aJSObj: nsIXPCTestParams, aOut?: OutParam<nsIURI>): void;
+  readonly testNaN: double;
+}
+
+// https://searchfox.org/mozilla-central/source/js/xpconnect/tests/idl/xpctest_returncode.idl
+
+interface nsIXPCTestReturnCodeParent extends nsISupports {
+  callChild(childBehavior: i32): nsresult;
+}
+
+interface nsIXPCTestReturnCodeChild extends nsISupports {
+  readonly CHILD_SHOULD_THROW: 0;
+  readonly CHILD_SHOULD_RETURN_SUCCESS: 1;
+  readonly CHILD_SHOULD_RETURN_RESULTCODE: 2;
+  readonly CHILD_SHOULD_NEST_RESULTCODES: 3;
+
+  doIt(behavior: i32): void;
+}
+
+// https://searchfox.org/mozilla-central/source/js/xpconnect/tests/idl/xpctest_utils.idl
+
+type nsIXPCTestFunctionInterface = Callable<{
+  echo(arg: string): string;
+}>
+
+interface nsIXPCTestUtils extends nsISupports {
+  doubleWrapFunction(f: nsIXPCTestFunctionInterface): nsIXPCTestFunctionInterface;
+}
+
+interface nsIXPCTestNoScriptMembers extends nsISupports {
+  exposedProp: i32;
+  exposedMethod(arg: i32): void;
+}
+
+interface nsIXPCComponents_Interfaces {
+  nsIXPCTestObjectReadOnly: nsJSIID<nsIXPCTestObjectReadOnly>;
+  nsIXPCTestObjectReadWrite: nsJSIID<nsIXPCTestObjectReadWrite>;
+  nsIXPCTestBug809674: nsJSIID<nsIXPCTestBug809674>;
+  nsIXPCTestCEnums: nsJSIID<nsIXPCTestCEnums, typeof nsIXPCTestCEnums.testFlagsExplicit & typeof nsIXPCTestCEnums.testFlagsImplicit>;
+  nsIXPCTestInterfaceA: nsJSIID<nsIXPCTestInterfaceA>;
+  nsIXPCTestInterfaceB: nsJSIID<nsIXPCTestInterfaceB>;
+  nsIXPCTestInterfaceC: nsJSIID<nsIXPCTestInterfaceC>;
+  nsIXPCTestParams: nsJSIID<nsIXPCTestParams>;
+  nsIXPCTestReturnCodeParent: nsJSIID<nsIXPCTestReturnCodeParent>;
+  nsIXPCTestReturnCodeChild: nsJSIID<nsIXPCTestReturnCodeChild>;
+  nsIXPCTestFunctionInterface: nsJSIID<nsIXPCTestFunctionInterface>;
+  nsIXPCTestUtils: nsJSIID<nsIXPCTestUtils>;
+  nsIXPCTestNoScriptMembers: nsJSIID<nsIXPCTestNoScriptMembers>;
+}
+
+}  // global
+
+// Typedefs from xpidl.
+type PRTime = i64;
+type char16_t = u16;
+type nsresult = u32;
+
+/**
+ * Gecko XPCOM builtins and utility types.
+ */
+
+/**
+ * Generic IDs are created by most code which passes a nsID to js.
+ * https://searchfox.org/mozilla-central/source/js/xpconnect/src/XPCJSID.cpp#24
+ */
+interface nsID<uuid = string> {
+  readonly number: uuid;
+}
+
+/**
+ * In addition to nsID, interface IIDs support instanceof type guards,
+ * and expose constants defined on the class, including variants from enums.
+ * https://searchfox.org/mozilla-central/source/js/xpconnect/src/XPCJSID.cpp#44
+ */
+type nsJSIID<iface, enums = {}> = nsID & Constants<iface> & enums & {
+  new (_: never): void;
+  prototype: iface;
+}
+
+/** A union of all known IIDs. */
+type nsIID = nsIXPCComponents_Interfaces[keyof nsIXPCComponents_Interfaces];
+
+/** A generic to resolve QueryInterface return type from a nsID (or nsIID). */
+export type nsQIResult<iid> = iid extends { prototype: infer U } ? U : never;
+
+/** XPCOM inout param is passed in as a js object with a value property. */
+type InOutParam<T> = { value: T };
+
+/** XPCOM out param is written to the passed in object's value property. */
+type OutParam<T> = { value?: T };
+
+/** A named type for interfaces to inherit from enums. */
+type Enums<enums> = enums;
+
+/** Callable accepts either form of a [function] interface. */
+type Callable<iface> = iface | Extract<iface[keyof iface], Function>
+
+/** Picks only const number properties from T. */
+type Constants<T> = { [K in keyof T as IfConst<K, T[K]>]: T[K] };
+
+/** Resolves only for keys K whose corresponding type T is a narrow number. */
+type IfConst<K, T> = T extends number ? (number extends T ? never : K) : never;
+
+declare global {
+  // Until we have [ChromeOnly] webidl.
+  interface BrowsingContext {}
+  interface ContentFrameMessageManager {}
+  interface DOMRequest {}
+  interface FrameLoader {}
+  interface JSProcessActorChild {}
+  interface JSProcessActorParent {}
+  interface TreeColumn {}
+  interface WebExtensionContentScript {}
+  interface WebExtensionPolicy {}
+  interface WindowGlobalParent {}
+  interface WindowContext {}
+  interface XULTreeElement {}
+}
+
+// Non-scriptable interfaces referenced from scriptable ones.
+interface nsIAsyncVerifyRedirectReadyCallback {}
+interface nsICRLiteTimestamp {}
+interface nsIInputAvailableCallback {}
+interface nsIScriptElement {}
+interface nsIThreadObserver {}
+interface nsIUDPSocketSyncListener {}
+interface nsIWebAuthnRegisterArgs {}
+interface nsIWebAuthnRegisterPromise {}
+interface nsIWebAuthnSignArgs {}
+interface nsIWebAuthnSignPromise {}
+interface nsIXPCScriptable {}
+
+// Typedefs useful as a quick reference in method signatures.
+type double = number;
+type float = number;
+type i16 = number;
+type i32 = number;
+type i64 = number;
+type u16 = number;
+type u32 = number;
+type u64 = number;
+type u8 = number;