Unify source map types

Summary: deduplicates / unifies types for source maps across the code base

Reviewed By: jeanlauliac

Differential Revision: D4955924

fbshipit-source-id: 25cb71031dce835dd7d2bc1c27d6b20050906e81

packager/src/ModuleGraph/output/source-map.js

@@ -10,37 +10,15 @@
  */
 'use strict';
 
+import type {FBSourceMap, IndexMapSection, IndexMap} from '../../lib/SourceMap';
+
+export type {FBSourceMap};
+
 type CreateIndexMapOptions = {|
   file?: string,
   sections?: Array<IndexMapSection>
 |};
 
-type IndexMap = MapBase & {
-  sections: Array<IndexMapSection>,
-};
-
-type IndexMapSection = {
-  map: IndexMap | MappingsMap,
-  offset: {line: number, column: number},
-};
-
-type MapBase = {
-  // always the first entry in the source map entry object per
-  // https://fburl.com/source-map-spec#heading=h.qz3o9nc69um5
-  version: 3,
-  file?: string,
-};
-
-type MappingsMap = MapBase & {
-  mappings: string,
-  names: Array<string>,
-  sourceRoot?: string,
-  sources: Array<string>,
-  sourcesContent?: Array<?string>,
-};
-
-export type SourceMap = IndexMap | MappingsMap;
-
 exports.createIndexMap = (opts?: CreateIndexMapOptions): IndexMap => ({
   version: 3,
   file: opts && opts.file,

packager/src/ModuleGraph/types.flow.js

@@ -10,7 +10,7 @@
  */
 'use strict';
 
-import type {SourceMap} from './output/source-map';
+import type {MappingsMap, SourceMap} from '../lib/SourceMap';
 import type {Ast} from 'babel-core';
 import type {Console} from 'console';
 
@@ -102,7 +102,7 @@ type ResolveOptions = {
 export type TransformerResult = {|
   ast: ?Ast,
   code: string,
-  map: ?SourceMap,
+  map: ?MappingsMap,
 |};
 
 export type Transformer = {
@@ -111,7 +111,7 @@ export type Transformer = {
     filename: string,
     options: ?{},
     plugins?: Array<string | Object | [string | Object, any]>,
-  ) => {ast: ?Ast, code: string, map: ?SourceMap}
+  ) => {ast: ?Ast, code: string, map: ?MappingsMap}
 };
 
 export type TransformResult = {|