From cef6bd975ada366e792a65a69e7a6aab6477ad38 Mon Sep 17 00:00:00 2001
From: yname <yname@galaxy.casa>
Date: Fri, 16 Aug 2024 15:24:15 -0400
Subject: [PATCH] Initial Commit

---
 .gitignore    |   1 +
 README.md     |   3 ++
 bun.lockb     | Bin 0 -> 2674 bytes
 package.json  |   5 +++
 src/index.ts  | 106 ++++++++++++++++++++++++++++++++++++++++++++++++++
 tsconfig.json |  27 +++++++++++++
 6 files changed, 142 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100755 bun.lockb
 create mode 100644 package.json
 create mode 100644 src/index.ts
 create mode 100644 tsconfig.json

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b512c09
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..754b38d
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# SourcemapGenerator
+
+This program watches multiple Rojo project directories for changes and builds a combined sourcemap.
\ No newline at end of file
diff --git a/bun.lockb b/bun.lockb
new file mode 100755
index 0000000000000000000000000000000000000000..7f5780b360025fb85ff54da75851e87f02d8633c
GIT binary patch
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..f471dfe
--- /dev/null
+++ b/package.json
@@ -0,0 +1,5 @@
+{
+  "devDependencies": {
+    "@types/bun": "^1.1.6"
+  }
+}
\ No newline at end of file
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..344aa34
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,106 @@
+import fs from 'fs'
+import { spawn } from 'child_process'
+
+// These are where I (yname) have my Rojo projects.
+const SOURCE_ROOTS = ['Core', 'Secret']
+
+type RojoSourcemap = {
+    name: string
+    className: string
+    filePaths?: string[]
+    children?: RojoSourcemap[]
+}
+
+const sourcemapCache = new Map<string, RojoSourcemap>()
+function getSourcemap(root: string): Promise<RojoSourcemap> {
+    const cached = sourcemapCache.get(root)
+    if (cached) {
+        return Promise.resolve(cached)
+    }
+    return new Promise((resolve, reject) => {
+        let stdout = ''
+        let stderr = ''
+        const rojo = spawn('rojo', ['sourcemap', root])
+        rojo.stdout.on('data', (data) => {
+            stdout += data.toString()
+        })
+        rojo.stderr.on('data', (data) => {
+            stderr += data.toString()
+        })
+        rojo.on('close', (code) => {
+            if (code === 0) {
+                try {
+                    const sourcemap = JSON.parse(stdout)
+                    sourcemapCache.set(root, sourcemap)
+                    resolve(sourcemap)
+                } catch {
+                    reject(new Error(`Failed to parse sourcemap: ${stdout}`))
+                }
+            } else {
+                reject(stderr)
+            }
+        })
+    })
+}
+
+function prefixSourcemap(sourcemap: RojoSourcemap, prefix: string): RojoSourcemap {
+    return {
+        name: sourcemap.name,
+        className: sourcemap.className,
+        filePaths: sourcemap.filePaths?.map(path => `${prefix}/${path}`),
+        children: sourcemap.children?.map(child => prefixSourcemap(child, prefix)),
+    }
+}
+
+async function getPrefixedSourcemap(root: string): Promise<RojoSourcemap> {
+    const sourcemap = await getSourcemap(root)
+    const prefixed = prefixSourcemap(sourcemap, root)
+    return prefixed
+}
+
+function mergeSourcemaps(sourcemaps: RojoSourcemap[]): RojoSourcemap {
+    const merged: Required<RojoSourcemap> = {
+        name: '',
+        className: '',
+        filePaths: [],
+        children: []
+    };
+
+    for (const sourcemap of sourcemaps) {
+        merged.name = sourcemap.name;
+        merged.className = sourcemap.className;
+
+        if (sourcemap.filePaths) {
+            merged.filePaths = sourcemap.filePaths;
+        }
+
+        for (const child of sourcemap.children ?? []) {
+            const existingChild = merged.children.findIndex(oldChild => oldChild.name === child.name);
+            if (existingChild !== -1) {
+                merged.children[existingChild] = mergeSourcemaps([merged.children[existingChild], child]);
+            } else {
+                merged.children.push(child);
+            }
+        }
+    }
+
+    return merged;
+}
+
+async function rebuild() {
+    const sourcemaps = await Promise.all([
+        getPrefixedSourcemap('Secret'),
+        getPrefixedSourcemap('Core'),
+    ])
+    const sourcemap = mergeSourcemaps(sourcemaps)
+    await fs.promises.writeFile('sourcemap.json', JSON.stringify(sourcemap, null, 2))
+}
+
+for (const root of SOURCE_ROOTS) {
+    fs.watch(root, {recursive:true}, () => {
+        sourcemapCache.delete(root)
+        rebuild()
+    })
+}
+
+rebuild()
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..1edfb46
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,27 @@
+{
+    "compilerOptions": {
+      // Enable latest features
+      "lib": ["ESNext"],
+      "target": "ESNext",
+      "module": "ESNext",
+      "moduleDetection": "force",
+      "jsx": "react-jsx",
+      "allowJs": true,
+  
+      // Bundler mode
+      "moduleResolution": "bundler",
+      "allowImportingTsExtensions": true,
+      "verbatimModuleSyntax": true,
+      "noEmit": true,
+  
+      // Best practices
+      "strict": true,
+      "skipLibCheck": true,
+      "noFallthroughCasesInSwitch": true,
+  
+      // Some stricter flags
+      "noUnusedLocals": true,
+      "noUnusedParameters": true,
+      "noPropertyAccessFromIndexSignature": true
+    }
+  }
\ No newline at end of file