1 files changed, 91 insertions, 0 deletions
diff --git a/node_modules/envify/custom.js b/node_modules/envify/custom.js
new file mode 100644
index 00000000..981ee834
--- /dev/null
+++ b/node_modules/envify/custom.js
@@ -0,0 +1,91 @@
+var esprima = require('esprima')
+  , through = require('through')
+
+var processEnvPattern = /\bprocess\.env\b/
+
+module.exports = function(rootEnv) {
+  rootEnv = rootEnv || process.env || {}
+
+  return function envify(file, argv) {
+    if (/\.json$/.test(file)) return through()
+
+    var Syntax = esprima.Syntax
+    var buffer = []
+    argv = argv || {}
+
+    return through(write, flush)
+
+    function write(data) {
+      buffer.push(data)
+    }
+
+    function transform(source, envs) {
+      var args  = [].concat(envs[0]._ || []).concat(envs[1]._ || [])
+      var purge = args.indexOf('purge') !== -1
+      var replacements = []
+
+      function match(node) {
+        return (
+          node.type === Syntax.MemberExpression
+          && node.object.type === Syntax.MemberExpression
+          && node.object.computed === false
+          && node.object.object.type === Syntax.Identifier
+          && node.object.object.name === 'process'
+          && node.object.property.type === Syntax.Identifier
+          && node.object.property.name === 'env'
+          && (node.computed ? node.property.type === Syntax.Literal : node.property.type === Syntax.Identifier)
+        )
+      }
+
+      esprima.parse(source, { tolerant: true }, function(node, meta) {
+        if (match(node)) {
+          var key = node.property.name || node.property.value
+          for (var i = 0; i < envs.length; i++) {
+            var value = envs[i][key]
+            if (value !== undefined) {
+              replacements.push({ node: node, meta: meta, value: JSON.stringify(value) })
+              return
+            }
+          }
+          if (purge) {
+            replacements.push({ node: node, meta: meta, value: undefined })
+          }
+        } else if (node.type === Syntax.AssignmentExpression) {
+          for (var i = 0; i < replacements.length; ++i) {
+            if (replacements[i].node === node.left) {
+              replacements.splice(i, 1)
+            }
+          }
+        }
+      })
+
+      var result = source
+      if (replacements.length > 0) {
+        replacements.sort(function (a, b) {
+          return b.meta.start.offset - a.meta.start.offset
+        })
+        for (var i = 0; i < replacements.length; i++) {
+          var r = replacements[i]
+          result = result.slice(0, r.meta.start.offset) + r.value + result.slice(r.meta.end.offset)
+        }
+      }
+
+      return result
+    }
+
+    function flush() {
+      var source = buffer.join('')
+
+      if (processEnvPattern.test(source)) {
+        try {
+          source = transform(source, [argv, rootEnv])
+        } catch(err) {
+          return this.emit('error', err)
+        }
+      }
+
+      this.queue(source)
+      this.queue(null)
+    }
+  }
+}