add source map support

package.json

@@ -33,6 +33,7 @@
     "mocha": "^4.0.1",
     "mocha-prepare": "^0.1.0",
     "nyc": "^12.0.2",
+    "source-map-support": "^0.5.8",
     "ts-node": "^3.3.0",
     "tslint": "^5.8.0",
     "tslint-language-service": "^0.9.7",
@@ -68,7 +69,7 @@
     "test:coverage": "yarn lint && ./scripts/test.sh COVERAGE",
     "test:fix": "yarn lint:fix && ./scripts/test.sh",
     "test:mocha": "NODE_ENV=test mocha --require ts-node/register.js --require test/setup-chai.ts --require 'test/integration/before.spec.ts' 'test/integration/web3.ts' 'test/**/*.spec.ts'",
-    "test:mocha:coverage": "NODE_ENV=test nyc mocha --require ts-node/register.js --require test/setup-chai.ts --require 'test/integration/before.spec.ts' 'test/integration/web3.ts' 'test/**/*.spec.ts'",
+    "test:mocha:coverage": "NODE_ENV=test nyc mocha --require ts-node/register.js --require source-map-support/register --require test/setup-chai.ts --require 'test/integration/before.spec.ts' 'test/integration/web3.ts' 'test/**/*.spec.ts'",
     "coveralls": "nyc report --reporter=text-lcov | coveralls"
   },
   "main": "./dist/generateTypeChainWrappers.js",

yarn.lock

@@ -526,6 +526,10 @@ browserify-zlib@^0.2.0:
   dependencies:
     pako "~1.0.5"
 
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+
 buffer-xor@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/buffer-xor/-/buffer-xor-1.0.3.tgz#26e61ed1422fb70dd42e6e36729ed51d855fe8d9"
@@ -2987,6 +2991,13 @@ source-map-support@^0.4.0:
   dependencies:
     source-map "^0.5.6"
 
+source-map-support@^0.5.8:
+  version "0.5.8"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.8.tgz#04f5581713a8a65612d0175fbf3a01f80a162613"
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
 source-map-url@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
@@ -3001,7 +3012,7 @@ source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
-source-map@^0.6.1, source-map@~0.6.1:
+source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"