fix: match mutliple dashes (options.camelCase) (webpack#556)

Author: sanpoChew

lib/compile-exports.js

@@ -1,7 +1,7 @@
 var camelCase = require("lodash.camelcase");
 
 function dashesCamelCase(str) {
- return str.replace(/-(\w)/g, function(match, firstLetter) {
+ return str.replace(/-+(\w)/g, function(match, firstLetter) {
  return firstLetter.toUpperCase();
  });
 }

test/camelCaseTest.js

@@ -5,6 +5,7 @@ var testRaw = require("./helpers").testRaw;
 
 describe("camelCase", function() {
 var css = ".btn-info_is-disabled { color: blue; }";
+var cssMultipleDashes = ".btn--info_is-disabled { color: blue; }";
 var mixedCss = ".btn-info_is-disabled { color: blue; } .simple { color: red; }";
 var exports = {
 with: [
@@ -16,6 +17,9 @@ describe("camelCase", function() {
 dashes: [
 [1, "._1L-rnCOXCE_7H94L5XT4uB { color: blue; }", ""]
 ],
+multipleDashes: [
+[1, "._3JUlsKrl__OF70Fq391jEw { color: blue; }", ""]
+],
 withoutOnly: [
 [1, "._1L-rnCOXCE_7H94L5XT4uB { color: blue; } .KKtodWG-IuEaequFjAsoJ { color: red; }", ""]
 ],
@@ -26,11 +30,13 @@ describe("camelCase", function() {
 exports.with.locals = {'btn-info_is-disabled': '_1L-rnCOXCE_7H94L5XT4uB'};
 exports.without.locals = {btnInfoIsDisabled: '_1L-rnCOXCE_7H94L5XT4uB', 'btn-info_is-disabled': '_1L-rnCOXCE_7H94L5XT4uB'};
 exports.dashes.locals = {btnInfo_isDisabled: '_1L-rnCOXCE_7H94L5XT4uB', 'btn-info_is-disabled': '_1L-rnCOXCE_7H94L5XT4uB'};
+exports.multipleDashes.locals = {btnInfo_isDisabled: '_3JUlsKrl__OF70Fq391jEw', 'btn--info_is-disabled': '_3JUlsKrl__OF70Fq391jEw'};
 exports.withoutOnly.locals = {btnInfoIsDisabled: '_1L-rnCOXCE_7H94L5XT4uB', simple: 'KKtodWG-IuEaequFjAsoJ'};
 exports.dashesOnly.locals = {btnInfo_isDisabled: '_1L-rnCOXCE_7H94L5XT4uB', simple: 'KKtodWG-IuEaequFjAsoJ'};
 test("with", css, exports.with, "?modules");
 test("without", css, exports.without, "?modules&camelCase");
 test("dashes", css, exports.dashes, "?modules&camelCase=dashes");
+test("multipleDashes", cssMultipleDashes, exports.multipleDashes, "?modules&camelCase=dashes");
 // Remove this option in v1.0.0 and make the removal of the original classname the default behaviour. See #440.
 test("withoutOnly", mixedCss, exports.withoutOnly, "?modules&camelCase=only");
 // Remove this option in v1.0.0 and make the removal of the original classname the default behaviour. See #440.