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jollywhoppers.com/witchsky.app
Bluesky app fork with some witchin' additions 💫
Patch facebook/metro#1130 to profile module init (#1796)
+85
+44
patches/metro+0.76.8.patch
+44
patches/metro+0.76.8.patch
···
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+
diff --git a/node_modules/metro/src/ModuleGraph/worker/JsFileWrapping.js b/node_modules/metro/src/ModuleGraph/worker/JsFileWrapping.js
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index 48a1409..ef185c9 100644
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--- a/node_modules/metro/src/ModuleGraph/worker/JsFileWrapping.js
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+++ b/node_modules/metro/src/ModuleGraph/worker/JsFileWrapping.js
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@@ -70,14 +70,19 @@ function wrapModule(
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+
importDefaultName,
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+
importAllName,
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+
dependencyMapName,
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- globalPrefix
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+ globalPrefix,
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+ moduleFactoryName
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) {
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const params = buildParameters(
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importDefaultName,
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importAllName,
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+
dependencyMapName
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);
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- const factory = functionFromProgram(fileAst.program, params);
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+ const factory = functionFromProgram(
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+ fileAst.program,
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+ params,
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+ moduleFactoryName
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+ );
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const def = t.callExpression(t.identifier(`${globalPrefix}__d`), [factory]);
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const ast = t.file(t.program([t.expressionStatement(def)]));
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const requireName = renameRequires(ast);
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@@ -107,7 +112,16 @@ function wrapJson(source, globalPrefix) {
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"});",
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].join("\n");
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}
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-function functionFromProgram(program, parameters) {
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+const JS_INVALID_IDENT_RE = /[^a-zA-Z0-9$_]/g;
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+function functionFromProgram(program, parameters, moduleFactoryName) {
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+ let identifier;
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+ if (typeof moduleFactoryName === "string" && moduleFactoryName !== "") {
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+ // Keep the name readable so it shows up in profiler traces.
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+ // Add an unlikely suffix to avoid collisions with the module code.
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+ identifier = t.identifier(
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+ `${moduleFactoryName.replace(JS_INVALID_IDENT_RE, "_")}__module_factory__`
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+ );
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+ }
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return t.functionExpression(
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undefined,
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parameters.map(makeIdentifier),
+41
patches/metro-transform-worker+0.76.8.patch
+41
patches/metro-transform-worker+0.76.8.patch
···
1
+
diff --git a/node_modules/metro-transform-worker/src/index.js b/node_modules/metro-transform-worker/src/index.js
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index 27d4cb3..fd71f47 100644
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--- a/node_modules/metro-transform-worker/src/index.js
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+++ b/node_modules/metro-transform-worker/src/index.js
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@@ -190,6 +190,10 @@ async function transformJS(file, { config, options, projectRoot }) {
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let dependencyMapName = "";
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let dependencies;
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let wrappedAst;
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+ const minify =
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+ options.minify &&
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+ options.unstable_transformProfile !== "hermes-canary" &&
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+ options.unstable_transformProfile !== "hermes-stable";
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+
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// If the module to transform is a script (meaning that is not part of the
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// dependency graph and it code will just be prepended to the bundle modules),
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@@ -229,19 +233,20 @@ async function transformJS(file, { config, options, projectRoot }) {
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if (config.unstable_disableModuleWrapping === true) {
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wrappedAst = ast;
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} else {
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+ let moduleFactoryName;
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+ if (options.dev && !minify) {
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+ moduleFactoryName = file.filename;
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+
+ }
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({ ast: wrappedAst } = JsFileWrapping.wrapModule(
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ast,
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importDefault,
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importAll,
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+
dependencyMapName,
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+
- config.globalPrefix
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+ config.globalPrefix,
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+ moduleFactoryName
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));
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}
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}
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- const minify =
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- options.minify &&
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- options.unstable_transformProfile !== "hermes-canary" &&
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- options.unstable_transformProfile !== "hermes-stable";
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const reserved = [];
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if (config.unstable_dependencyMapReservedName != null) {
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reserved.push(config.unstable_dependencyMapReservedName);