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chore(jest-environment) - update types and type usage in jest-runtime #8439

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May 8, 2019
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chore(jest-environment) - update types and type usage in jest-runtime #8439

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8ee2c99
Add types to ModuleWrapper
JoshRosenstein May 8, 2019
6174962
Fix extraGlobals types & remove unnecessary wrapper variable
JoshRosenstein May 8, 2019
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15 changes: 12 additions & 3 deletions packages/jest-environment/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -22,8 +22,17 @@ export type EnvironmentContext = Partial<{
testPath: Config.Path;
}>;

// TODO: type this better: https://nodejs.org/api/modules.html#modules_the_module_wrapper
type ModuleWrapper = (...args: Array<unknown>) => unknown;
// Different Order than https://nodejs.org/api/modules.html#modules_the_module_wrapper , however needs to be in the form [jest-transform]ScriptTransformer accepts
export type ModuleWrapper = (
module: Module,
exports: Module['exports'],
require: Module['require'],
__dirname: string,
__filename: Module['filename'],
global: Global.Global,
jest: Jest,
...extraGlobals: Array<any>
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) => unknown;

export declare class JestEnvironment {
constructor(config: Config.ProjectConfig, context?: EnvironmentContext);
Expand All @@ -38,7 +47,7 @@ export declare class JestEnvironment {
handleTestEvent?(event: Circus.Event, state: Circus.State): void;
}

export type Module = typeof module;
export type Module = NodeModule;

export interface LocalModuleRequire extends NodeRequire {
requireActual(moduleName: string): unknown;
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12 changes: 7 additions & 5 deletions packages/jest-runtime/src/index.ts
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Expand Up @@ -744,12 +744,15 @@ class Runtime {
}

const wrapper = runScript[ScriptTransformer.EVAL_RESULT_VARIABLE];
const moduleArguments = new Set([
localModule, // module object
wrapper.call(
localModule.exports,
localModule as NodeModule, // module object
localModule.exports, // module exports
localModule.require, // require implementation
localModule.require as NodeRequireFunction, // require implementation
dirname, // __dirname

filename, // __filename

this._environment.global, // global object
this._createJestObjectFor(
filename,
Expand All @@ -764,8 +767,7 @@ class Runtime {
`You have requested '${globalVariable}' as a global variable, but it was not present. Please check your config or your global environment.`,
);
}),
]);
wrapper.call(localModule.exports, ...Array.from(moduleArguments));
);

this._isCurrentlyExecutingManualMock = origCurrExecutingManualMock;
this._currentlyExecutingModulePath = lastExecutingModulePath;
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