.

node_modules/uglify-js/tools/node.js

@@ -0,0 +1,78 @@
+var fs = require("fs");
+
+exports.FILES = [
+    "../lib/utils.js",
+    "../lib/ast.js",
+    "../lib/parse.js",
+    "../lib/transform.js",
+    "../lib/scope.js",
+    "../lib/output.js",
+    "../lib/compress.js",
+    "../lib/sourcemap.js",
+    "../lib/mozilla-ast.js",
+    "../lib/propmangle.js",
+    "../lib/minify.js",
+    "./exports.js",
+].map(function(file) {
+    return require.resolve(file);
+});
+
+new Function("MOZ_SourceMap", "exports", function() {
+    var code = exports.FILES.map(function(file) {
+        return fs.readFileSync(file, "utf8");
+    });
+    code.push("exports.describe_ast = " + describe_ast.toString());
+    return code.join("\n\n");
+}())(require("source-map"), exports);
+
+function describe_ast() {
+    var out = OutputStream({ beautify: true });
+    function doitem(ctor) {
+        out.print("AST_" + ctor.TYPE);
+        var props = ctor.SELF_PROPS.filter(function(prop) {
+            return !/^\$/.test(prop);
+        });
+        if (props.length > 0) {
+            out.space();
+            out.with_parens(function() {
+                props.forEach(function(prop, i) {
+                    if (i) out.space();
+                    out.print(prop);
+                });
+            });
+        }
+        if (ctor.documentation) {
+            out.space();
+            out.print_string(ctor.documentation);
+        }
+        if (ctor.SUBCLASSES.length > 0) {
+            out.space();
+            out.with_block(function() {
+                ctor.SUBCLASSES.forEach(function(ctor, i) {
+                    out.indent();
+                    doitem(ctor);
+                    out.newline();
+                });
+            });
+        }
+    };
+    doitem(AST_Node);
+    return out + "\n";
+}
+
+function infer_options(options) {
+    var result = exports.minify("", options);
+    return result.error && result.error.defs;
+}
+
+exports.default_options = function() {
+    var defs = {};
+    Object.keys(infer_options({ 0: 0 })).forEach(function(component) {
+        var options = {};
+        options[component] = { 0: 0 };
+        if (options = infer_options(options)) {
+            defs[component] = options;
+        }
+    });
+    return defs;
+};