Description: Use source-map-js instead of source-map
 source-map >= 0.7 has an async API which is incompatible.
 source-map-js is a synchronous fork of source-map 0.6.
Forwarded: not-needed
--- a/lib/lines.ts
+++ b/lib/lines.ts
@@ -1,5 +1,5 @@
 import assert from "assert";
-import sourceMap from "source-map";
+import sourceMap from "source-map-js";
 import { normalize as normalizeOptions, Options } from "./options";
 import { namedTypes } from "ast-types";
 import { comparePos } from "./util";
--- a/lib/util.ts
+++ b/lib/util.ts
@@ -1,7 +1,7 @@
 import assert from "assert";
 import * as types from "ast-types";
 const n = types.namedTypes;
-import sourceMap from "source-map";
+import sourceMap from "source-map-js";
 const SourceMapConsumer = sourceMap.SourceMapConsumer;
 const SourceMapGenerator = sourceMap.SourceMapGenerator;
 const hasOwn = Object.prototype.hasOwnProperty;
@@ -67,8 +67,8 @@
 
   smcLatter.eachMapping(function (mapping) {
     const origPos = smcFormer.originalPositionFor({
-      line: mapping.originalLine,
-      column: mapping.originalColumn,
+      line: mapping.originalLine as number,
+      column: mapping.originalColumn as number,
     });
 
     const sourceName = origPos.source;
--- a/test/mapping.ts
+++ b/test/mapping.ts
@@ -1,5 +1,5 @@
 import assert from "assert";
-import sourceMap from "source-map";
+import sourceMap from "source-map-js";
 import * as recast from "../main";
 import * as types from "ast-types";
 const n = types.namedTypes;