From 68a3e8867bc18d470d12510e550cfe210a0badb1 Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@matrix.org>
Date: Thu, 27 Aug 2020 19:51:04 +0200
Subject: [PATCH] populate lib dir entirely in postinstall script

---
 lib/olm/olm.js           |  1 -
 lib/olm/olm.wasm         |  1 -
 lib/olm/olm_legacy.js    |  1 -
 scripts/common.mjs       | 12 ++++++++++++
 scripts/post-install.mjs | 22 +++++++++++++++++-----
 5 files changed, 29 insertions(+), 8 deletions(-)
 delete mode 120000 lib/olm/olm.js
 delete mode 120000 lib/olm/olm.wasm
 delete mode 120000 lib/olm/olm_legacy.js
 create mode 100644 scripts/common.mjs

diff --git a/lib/olm/olm.js b/lib/olm/olm.js
deleted file mode 120000
index 8bedac52..00000000
--- a/lib/olm/olm.js
+++ /dev/null
@@ -1 +0,0 @@
-../../node_modules/olm/olm.js
\ No newline at end of file
diff --git a/lib/olm/olm.wasm b/lib/olm/olm.wasm
deleted file mode 120000
index 39293356..00000000
--- a/lib/olm/olm.wasm
+++ /dev/null
@@ -1 +0,0 @@
-../../node_modules/olm/olm.wasm
\ No newline at end of file
diff --git a/lib/olm/olm_legacy.js b/lib/olm/olm_legacy.js
deleted file mode 120000
index 140fffb8..00000000
--- a/lib/olm/olm_legacy.js
+++ /dev/null
@@ -1 +0,0 @@
-../../node_modules/olm/olm_legacy.js
\ No newline at end of file
diff --git a/scripts/common.mjs b/scripts/common.mjs
new file mode 100644
index 00000000..e135022a
--- /dev/null
+++ b/scripts/common.mjs
@@ -0,0 +1,12 @@
+import fsRoot from "fs";
+const fs = fsRoot.promises;
+
+export async function removeDirIfExists(targetDir) {
+    try {
+        await fs.rmdir(targetDir, {recursive: true});
+    } catch (err) {
+        if (err.code !== "ENOENT") {
+            throw err;
+        }
+    }
+}
diff --git a/scripts/post-install.mjs b/scripts/post-install.mjs
index 8c00d2a0..328f8c7c 100644
--- a/scripts/post-install.mjs
+++ b/scripts/post-install.mjs
@@ -23,6 +23,7 @@ import { dirname } from 'path';
 // needed to translate commonjs modules to esm
 import commonjs from '@rollup/plugin-commonjs';
 // multi-entry plugin so we can add polyfill file to main
+import {removeDirIfExists} from "./common.mjs";
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
@@ -41,12 +42,23 @@ async function commonjsToESM(src, dst) {
     await fs.writeFile(dst, code, "utf8");
 }
 
-async function transpile() {
-    await fs.mkdir(path.join(projectDir, "lib/another-json/"));
+async function populateLib() {
+    const libDir = path.join(projectDir, "lib/");
+    const modulesDir = path.join(projectDir, "node_modules/");
+    await removeDirIfExists(libDir);
+    await fs.mkdir(libDir);
+    const olmSrcDir = path.join(modulesDir, "olm/");
+    const olmDstDir = path.join(libDir, "olm/");
+    await fs.mkdir(olmDstDir);
+    for (const file of ["olm.js", "olm.wasm", "olm_legacy.js"]) {
+        await fs.symlink(path.join(olmSrcDir, file), path.join(olmDstDir, file));
+    }
+    // transpile another-json to esm
+    await fs.mkdir(path.join(libDir, "another-json/"));
     await commonjsToESM(
-        path.join(projectDir, 'node_modules/another-json/another-json.js'),
-        path.join(projectDir, "lib/another-json/index.js")
+        path.join(modulesDir, 'another-json/another-json.js'),
+        path.join(libDir, "another-json/index.js")
     );
 }
 
-transpile();
+populateLib();