Add WebAssembly to runtime library (#1677)

This also modifies the `ts_library_builder` to support inlining assets.

Includes integration tests from @sh7dm

1 files changed, 26 insertions, 0 deletions

diff --git a/tools/ts_library_builder/ast_util.ts b/tools/ts_library_builder/ast_util.ts
index 9bb7e8edc..58aa7fb9c 100644
--- a/tools/ts_library_builder/ast_util.ts
+++ b/tools/ts_library_builder/ast_util.ts
@@ -243,6 +243,32 @@ export function getSourceComment(
   return `\n// @url ${relative(rootPath, sourceFile.getFilePath())}\n\n`;
 }
 
+interface InlineFilesOptions {
+  basePath: string;
+  debug?: boolean;
+  inline: string[];
+  targetSourceFile: SourceFile;
+}
+
+/** Inline files into the target source file. */
+export function inlineFiles({
+  basePath,
+  debug,
+  inline,
+  targetSourceFile
+}: InlineFilesOptions) {
+  for (const filename of inline) {
+    const text = readFileSync(filename, {
+      encoding: "utf8"
+    });
+    targetSourceFile.addStatements(
+      debug
+        ? `\n// @url ${relative(basePath, filename)}\n\n${text}`
+        : `\n${text}`
+    );
+  }
+}
+
 /**
  * Load and write to a virtual file system all the default libs needed to
  * resolve types on project.