From b55b10c6b69117ae9ad1a87a06767cbee99eb5a3 Mon Sep 17 00:00:00 2001 From: Wei Lu Date: Wed, 8 Oct 2014 09:26:45 -0700 Subject: [PATCH] types: replace Function.name with an IE compatible alternative --- src/types.js | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/src/types.js b/src/types.js index 501934f..5f885d0 100644 --- a/src/types.js +++ b/src/types.js @@ -26,9 +26,15 @@ module.exports = function enforce(type, value) { } default: { - if (value.constructor.toString().match(/function (.*?)\(/)[1] === type.name) return + if (getName(value.constructor) === getName(type)) return } } - throw new TypeError('Expected ' + (type.name || type) + ', got ' + value) + throw new TypeError('Expected ' + (getName(type) || type) + ', got ' + value) +} + +function getName(fn) { + // Why not fn.name: https://kangax.github.io/compat-table/es6/#function_name_property + var match = fn.toString().match(/function (.*?)\(/) + return match ? match[1] : null }