Node.js & module.exports & exports

2022-10-12 22:28:22

Node.js & module.exports & exports

https://www.cnblogs.com/xgqfrms/p/9493550.html

exports & module.exports

Functions and objects are added to the root of a module by specifying additional properties on the special exports object.

module.exports & exports

CJS Modules



// CJS Modules

/*

exports.a = 1;

exports.b = 2;

exports.c = 3;

exports.d = 4;

// exports = { a: 1, b: 2, c: 3, d: 4 }

 */

exports.a = 1;

exports.b = 2;

module.exports = { c: 3 };

module.exports.d = 4;

// module.exports = { c: 3, d: 4 }

结论

exports just shorthand of module.exports
if exist both exports & module.exports, module.exports will be overwritten exports ️
best practice, just using module.exports as possible as you can



exports.a = 1;

exports.b = 2;

module.exports = { c: 3 };

module.exports.d = 4;

// module.exports = { c: 3, d: 4 }

console.log(module);



exports.a = 1;

exports.b = 2;

module.exports = { c: 3 };

module.exports.d = 4;

// module.exports = { c: 3, d: 4 }

module.exports.hello = true; // Exported from require of module

exports = { hello: false };  // Not exported, only available in the module

console.log(`hello =`, exports);

console.log(module);