fix: @parcel/source-map default import

chialab · Aug 31, 2023 · 3337905 · 3337905
1 parent 5f0f3c9
commit 3337905
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Showing 5 changed files with 18 additions and 27 deletions.
diff --git a/.changeset/long-countries-count.md b/.changeset/long-countries-count.md
@@ -0,0 +1,5 @@
+---
+"@chialab/estransform": patch
+---
+
+Fix @parcel/source-map default import.
diff --git a/packages/estransform/build.js b/packages/estransform/build.js
@@ -12,4 +12,9 @@ esbuild.build({
     external: [
         '@parcel/source-map',
     ],
+    banner: {
+        js: `import { createRequire as __moduleCreateRequire } from 'module';
+const require = __moduleCreateRequire(import.meta.url);
+`,
+    },
 });
diff --git a/packages/estransform/lib/parcel-source-map-default.cjs b/packages/estransform/lib/parcel-source-map-default.cjs
@@ -0,0 +1,3 @@
+// we need to require the module for compatibility with the default export
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+module.exports = require('@parcel/source-map').default;
diff --git a/packages/estransform/lib/sourcemaps.js b/packages/estransform/lib/sourcemaps.js
@@ -1,8 +1,6 @@
 import { readFile } from 'fs/promises';
 import path from 'path';
-import sourceMapDefault from '@parcel/source-map';
-
-const { default: SourceMapNode } = sourceMapDefault;
+import SourceMapNode from './parcel-source-map-default.cjs';
 
 const SOURCEMAP_REGEX = /(?:(\/\*+\s*?sourceMappingURL\s*=)([\s\S]*?)(\*\/))|(?:(\/\/#?\s*?sourceMappingURL\s*=)(.*?)([\r\n]|$))/;
 
@@ -17,6 +15,10 @@ const SOURCEMAP_REGEX = /(?:(\/\*+\s*?sourceMappingURL\s*=)([\s\S]*?)(\*\/))|(?:
  * @property {string} [file]
  */
 
+/**
+ * @typedef {import('@parcel/source-map').default} SourceMapNode
+ */
+
 /**
  * @param {string} map
  * @returns {SourceMap}

diff --git a/packages/estransform/modules.d.ts b/packages/estransform/modules.d.ts
@@ -1,27 +1,3 @@
-declare type SourceMap = {
-    version?: number;
-    sources: string[];
-    names: string[];
-    sourceRoot?: string;
-    sourcesContent?: string[];
-    mappings: string;
-    file?: string;
-};
-
-declare module '@parcel/source-map' {
-    class SourceMapNode {
-        setSourceContent(filename: string, contents: string);
-        addVLQMap(mapping: SourceMap);
-        extends(buffer: Buffer|SourceMapNode);
-        toVLQ(): SourceMap;
-        toBuffer(): Buffer;
-    }
-
-    export default {
-        default: SourceMapNode,
-    };
-};
-
 declare module 'sucrase/dist/parser/index.js' {
     export { File, parse } from 'sucrase';
 }