throw signature changed error when running with happypack

[budlion]

Error: Signature changed: context parameter added
    at Resolver.resolve (<<project location>>\node_modules\webpack\node_modules\enhanced-resolve\lib\Resolver.js:32:9)
    at Resolver.resolver.resolve (<<project location>>\node_modules\hard-source-webpack-plugin\lib\enhanced-resolve-cache.js:329:22)
    at resolveLoader (<<project location>>\node_modules\happypack\lib\WebpackUtils.js:150:17)
    at <<project location>>\node_modules\happypack\lib\WebpackUtils.js:131:7
    at <<project location>>\node_modules\happypack\node_modules\async\lib\async.js:713:13
    at async.forEachOf.async.eachOf (<<project location>>\node_modules\happypack\node_modules\async\lib\async.js:233:13)
    at _parallel (<<project location>>\node_modules\happypack\node_modules\async\lib\async.js:712:9)
    at Object.async.parallel (<<project location>>\node_modules\happypack\node_modules\async\lib\async.js:726:9)
    at Object.exports.resolveLoaders (<<project location>>\node_modules\happypack\lib\WebpackUtils.js:127:9)
    at resolveLoaders (<<project location>>\node_modules\happypack\lib\HappyPlugin.js:139:20)
    at <<project location>>\node_modules\happypack\node_modules\async\lib\async.js:713:13
    at iterate (<<project location>>\node_modules\happypack\node_modules\async\lib\async.js:262:13)
    at async.forEachOfSeries.async.eachOfSeries (<<project location>>\node_modules\happypack\node_modules\async\lib\async.js:281:9)
    at _parallel (<<project location>>\node_modules\happypack\node_modules\async\lib\async.js:712:9)
    at Object.async.series (<<project location>>\node_modules\happypack\node_modules\async\lib\async.js:734:9)
    at HappyPlugin.start (<<project location>>\node_modules\happypack\lib\HappyPlugin.js:128:9)

webpack: 3.12.0 enhanced-resolve: 3.4.1 happypack: 4.0.1 || 5.0.1

enhanced-resolve 3.x does not support 3 arguments, while hard-source-webpack-plugin will trap the code that try to give resolve 3 arguments.

// enhanced-resolve
Resolver.prototype.resolve = function resolve(context, path, request, callback) {
	if(arguments.length === 3) {
		throw new Error("Signature changed: context parameter added" + arguments[0] + ' ' + arguments[1] + ' ' + arguments[2]);
	}
}

// hard-source-webpack-plugin CacheEnhancedResolve.sj

          if (numArgs === 3) { 
            _resolve.call(this, context, request, callback); // will trap here
          } else if (numArgs === 5) {
            _resolve.call(
              this,
              info,
              context,
              request,
              resolveContext,
              callback,
            );
          } else {
            _resolve.call(this, info, context, request, callback);
          }

Ops! our resolver has 5 arguments ...

// happypack
  function resolveLoader(context, loader, callback) {
    if (compiler.resolverFactory) {
      compiler.resolverFactory.get("loader").resolve({}, context, loader, {}, callback);
    } else {
      var resolve = compiler.resolvers.loader.resolve;
      var resolveContext = compiler.resolvers.loader;

      // webpack2 has changed the signature for the resolve method where it accepts
      // a fourth argument (context), so we need to sniff and support both versions
      //
      // fixes #23
      if (resolve.length === 4) {
        resolve.apply(resolveContext, [ context, context, loader, callback ])
      }
      else {
        resolve.apply(resolveContext, [ context, loader, callback ]);
      }
    }
  }

[dorado-lmz]

I also met。 Can only change happypack

 if (resolve.length > 3) {
      resolve.apply(resolveContext, [ context, context, loader, callback ])
    }
    else {
      resolve.apply(resolveContext, [ context, loader, callback ]);
    }

[zhangrunhao]

I also met。 Can only change happypack

 if (resolve.length > 3) {
      resolve.apply(resolveContext, [ context, context, loader, callback ])
    }
    else {
      resolve.apply(resolveContext, [ context, loader, callback ]);
    }

hi . now i can use happypack and hard-source-webpack-plugin .

but i want to ask , why change after can use? happy is work now ?