Initial commit

node_modules/maplibre-gl/build/generate-shaders.ts

@@ -0,0 +1,36 @@
+import fs from 'fs';
+import {globSync} from 'glob';
+import path from 'path';
+
+console.log('Generating shaders');
+
+/**
+ * This script is intended to copy the glsl file to the compilation output folder,
+ * change their extension to .js and export the shaders as strings in javascript.
+ * It will also minify them a bit if needed and change the extension to .js
+ * After that it will create a combined typescript definition file and manipulate it a bit
+ * It will also create a simple package.json file to allow importing this package in webpack
+ */
+
+function glslToTs(code: string): string {
+    code = code
+        .trim() // strip whitespace at the start/end
+        .replace(/\s*\/\/[^\n]*\n/g, '\n') // strip double-slash comments
+        .replace(/\n+/g, '\n') // collapse multi line breaks
+        .replace(/\n\s+/g, '\n') // strip indentation
+        .replace(/\s?([+-\/*=,])\s?/g, '$1') // strip whitespace around operators
+        .replace(/([;\(\),\{\}])\n(?=[^#])/g, '$1'); // strip more line breaks
+
+    return `// This file is generated. Edit build/generate-shaders.ts, then run \`npm run codegen\`.
+export default ${JSON.stringify(code).replaceAll('"', '\'')};\n`;
+}
+
+const shaderFiles = globSync('./src/shaders/*.glsl');
+for (const file of shaderFiles) {
+    const glslFile = fs.readFileSync(file, 'utf8');
+    const tsSource = glslToTs(glslFile);
+    const fileName = path.join('.', 'src', 'shaders', `${file.split(path.sep).splice(-1)}.g.ts`);
+    fs.writeFileSync(fileName, tsSource);
+}
+
+console.log(`Finished converting ${shaderFiles.length} shaders`);