Determine whether a JavaScript file is an AMD module

ismodule

#!/usr/bin/env coffee

esprima = require 'esprima'


isModule = (source) ->
  esprima.parse(source).body.some (node) ->
    node.type is 'ExpressionStatement' and
    node.expression.type is 'CallExpression' and
    node.expression.callee.type is 'Identifier' and
    node.expression.callee.name is 'define'


process.stdin.resume()
process.stdin.setEncoding('utf8')

source = ''
process.stdin.on 'data', (chunk) -> source += chunk
process.stdin.on 'end', -> process.stdout.write "#{isModule source}\n"

$ echo 'define()' | ./ismodule
true

$ echo 'blah()' | ./ismodule
false