1 files changed, 72 insertions, 0 deletions
diff --git a/node_modules/chroma-js/src/api.coffee b/node_modules/chroma-js/src/api.coffee
new file mode 100644
index 0000000000..50bf4073ea
--- /dev/null
+++ b/node_modules/chroma-js/src/api.coffee
@@ -0,0 +1,72 @@
+
+chroma = (x,y,z,m) ->
+    new Color x,y,z,m
+
+# CommonJS module is defined
+module.exports = chroma if module? and module.exports?
+
+if typeof define == 'function' and define.amd
+    define [], () -> chroma
+else
+    root = (exports ? this)
+    root.chroma = chroma
+
+#
+# static constructors
+#
+
+chroma.color = (x,y,z,m) ->
+    new Color x,y,z,m
+
+chroma.hsl = (h,s,l,a) ->
+    new Color h,s,l,a,'hsl'
+
+chroma.hsv = (h,s,v,a) ->
+    new Color h,s,v,a,'hsv'
+
+chroma.rgb = (r,g,b,a) ->
+    new Color r,g,b,a,'rgb'
+
+chroma.hex = (x) ->
+    new Color x
+
+chroma.css = (x) ->
+    new Color x
+
+chroma.lab = (l,a,b) ->
+    new Color l,a,b,'lab'
+
+chroma.lch = (l,c,h) ->
+    new Color l,c,h, 'lch'
+
+chroma.hsi = (h,s,i) ->
+    new Color h,s,i,'hsi'
+
+chroma.gl = (r,g,b,a) ->
+    new Color r*255,g*255,b*255,a,'gl'
+
+chroma.interpolate = (a,b,f,m) ->
+    if not a? or not b?
+        return '#000'
+    a = new Color a if type(a) == 'string'
+    b = new Color b if type(b) == 'string'
+    a.interpolate f,b,m
+
+chroma.mix = chroma.interpolate
+
+chroma.contrast = (a, b) ->
+    # WCAG contrast ratio
+    # see http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef
+    a = new Color a if type(a) == 'string'
+    b = new Color b if type(b) == 'string'
+    l1 = a.luminance()
+    l2 = b.luminance()
+    if l1 > l2 then (l1 + 0.05) / (l2 + 0.05) else (l2 + 0.05) / (l1 + 0.05)
+
+chroma.luminance = (color) ->
+    chroma(color).luminance()
+
+
+# exposing raw classes for testing purposes
+
+chroma._Color = Color