error running make.js

[michaelpalumbo]

@grrrwaaa When running make.js I get the following error. Am I using it incorrectly?

~$ node make.js
~/worldmaking.github.io/make.js:26
var markup = peg.buildParser(fs.readFileSync("markup.pegjs", "utf8"));
                 ^

TypeError: undefined is not a function
    at Object.<anonymous> (~/worldmaking.github.io/make.js:26:18)
    at Module._compile (internal/modules/cjs/loader.js:1158:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1178:10)
    at Module.load (internal/modules/cjs/loader.js:1002:32)
    at Function.Module._load (internal/modules/cjs/loader.js:901:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
    at internal/main/run_main_module.js:18:47