feat: add sourcemap support

Author: h-a-n-a

package.json

@@ -49,6 +49,7 @@
     "@types/mocha": "^5.2.7",
     "@types/mz": "^0.0.32",
     "@types/node": "^12.12.7",
+    "@types/source-map-support": "^0.5.4",
     "@typescript-eslint/eslint-plugin": "^4.11.1",
     "@typescript-eslint/parser": "^4.11.1",
     "chalk": "2.4.1",
@@ -72,6 +73,7 @@
     "lines-and-columns": "^1.1.6",
     "mz": "^2.7.0",
     "pirates": "^4.0.1",
+    "source-map-support": "^0.5.21",
     "ts-interface-checker": "^0.1.9"
   },
   "engines": {

src/register.ts

@@ -1,4 +1,5 @@
 import * as pirates from "pirates";
+import sourceMapSupport from "source-map-support";
 
 import {Options, transform} from "./index";
 
@@ -29,23 +30,36 @@ export function addHook(
   );
 }
 
+let sourceMapInstalled = false;
+
+const installSourceMap = (): void => {
+  if (sourceMapInstalled) return;
+  sourceMapInstalled = true;
+  sourceMapSupport.install();
+};
+
 export function registerJS(hookOptions?: HookOptions): RevertFunction {
+  installSourceMap();
   return addHook(".js", {transforms: ["imports", "flow", "jsx"]}, hookOptions);
 }
 
 export function registerJSX(hookOptions?: HookOptions): RevertFunction {
+  installSourceMap();
   return addHook(".jsx", {transforms: ["imports", "flow", "jsx"]}, hookOptions);
 }
 
 export function registerTS(hookOptions?: HookOptions): RevertFunction {
+  installSourceMap();
   return addHook(".ts", {transforms: ["imports", "typescript"]}, hookOptions);
 }
 
 export function registerTSX(hookOptions?: HookOptions): RevertFunction {
+  installSourceMap();
   return addHook(".tsx", {transforms: ["imports", "typescript", "jsx"]}, hookOptions);
 }
 
 export function registerTSLegacyModuleInterop(hookOptions?: HookOptions): RevertFunction {
+  installSourceMap();
   return addHook(
     ".ts",
     {
@@ -57,6 +71,7 @@ export function registerTSLegacyModuleInterop(hookOptions?: HookOptions): Revert
 }
 
 export function registerTSXLegacyModuleInterop(hookOptions?: HookOptions): RevertFunction {
+  installSourceMap();
   return addHook(
     ".tsx",
     {

yarn.lock

@@ -168,6 +168,13 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.20.13.tgz#e743bae112bd779ac9650f907197dd2caa7f0364"
   integrity sha512-1x8W5OpxPq+T85OUsHRP6BqXeosKmeXRtjoF39STcdf/UWLqUsoehstZKOi0CunhVqHG17AyZgpj20eRVooK6A==
 
+"@types/source-map-support@^0.5.4":
+  version "0.5.4"
+  resolved "https://registry.yarnpkg.com/@types/source-map-support/-/source-map-support-0.5.4.tgz#574ff6a8636bc0ebae78a8014136f749b3177d58"
+  integrity sha512-9zGujX1sOPg32XLyfgEB/0G9ZnrjthL/Iv1ZfuAjj8LEilHZEpQSQs1scpRXPhHzGYgWiLz9ldF1cI8JhL+yMw==
+  dependencies:
+    source-map "^0.6.0"
+
 "@typescript-eslint/eslint-plugin@^4.11.1":
   version "4.25.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.25.0.tgz#d82657b6ab4caa4c3f888ff923175fadc2f31f2a"
@@ -446,6 +453,11 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
   integrity sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==
 
+buffer-from@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.2.tgz#2b146a6fd72e80b4f55d255f35ed59a3a9a41bd5"
+  integrity sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==
+
 caching-transform@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/caching-transform/-/caching-transform-3.0.2.tgz#601d46b91eca87687a281e71cef99791b0efca70"
@@ -2587,12 +2599,20 @@ socket.io@^2, socket.io@^2.3.0:
     socket.io-client "2.4.0"
     socket.io-parser "~3.4.0"
 
+source-map-support@^0.5.21:
+  version "0.5.21"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.21.tgz#04fe7c7f9e1ed2d662233c28cb2b35b9f63f6e4f"
+  integrity sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
 source-map@^0.5.0:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
   integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
 
-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"
   integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==