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Edit File: extract-props.js

#! /usr/bin/env node

"use strict";

if (ARGS.o) try {
    output = JSON.parse(fs.readFileSync(ARGS.o, "utf8"));
} catch(ex) {}

files.forEach(getProps);

if (ARGS.o) {
    fs.writeFileSync(ARGS.o, JSON.stringify(output, null, 2), "utf8");
} else {
    console.log("%s", JSON.stringify(output, null, 2));
}

function getProps(filename) {
    var code = fs.readFileSync(filename, "utf8");
    var ast = U2.parse(code);

ast.walk(new U2.TreeWalker(function(node){
        if (node instanceof U2.AST_ObjectKeyVal) {
            add(node.key);
        }
        else if (node instanceof U2.AST_ObjectProperty) {
            add(node.key.name);
        }
        else if (node instanceof U2.AST_Dot) {
            add(node.property);
        }
        else if (node instanceof U2.AST_Sub) {
            addStrings(node.property);
        }
    }));

function add(name) {
        output.props[name] = true;
    }
}

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