diff --git a/src/clamp.js b/src/clamp.js
index 10a85b83..f634ce09 100644
--- a/src/clamp.js
+++ b/src/clamp.js
@@ -13,7 +13,7 @@ const fixup_rgb = color => {
 	return c;
 };
 
-const clampRgb = color => {
+export const clampRgb = color => {
 	color = prepare(color);
 
 	// if the color is undefined or displayable, return it directly
@@ -25,7 +25,7 @@ const clampRgb = color => {
 	return conv(fixup_rgb(color));
 };
 
-const clampChroma = (color, mode = 'lch') => {
+export const clampChroma = (color, mode = 'lch') => {
 	color = prepare(color);
 
 	// if the color is undefined or displayable, return it directly
@@ -68,15 +68,3 @@ const clampChroma = (color, mode = 'lch') => {
 		displayable(clamped) ? clamped : { ...clamped, c: _last_good_c }
 	);
 };
-
-// Deprecated / no longer documented
-const clamp = (method = 'rgb') => {
-	switch (method) {
-		case 'rgb':
-			return clampRgb;
-		case 'lch':
-			return clampChroma;
-	}
-};
-
-export { clampRgb, clampChroma, clamp };
diff --git a/src/deficiency.js b/src/deficiency.js
index abb34531..b7f99e9f 100644
--- a/src/deficiency.js
+++ b/src/deficiency.js
@@ -25,342 +25,132 @@ let rgb = converter('rgb');
 const PROT = [
 	[1.0, 0.0, -0.0, 0.0, 1.0, 0.0, -0.0, -0.0, 1.0],
 	[
-		0.856167,
-		0.182038,
-		-0.038205,
-		0.029342,
-		0.955115,
-		0.015544,
-		-0.00288,
-		-0.001563,
-		1.004443
+		0.856167, 0.182038, -0.038205, 0.029342, 0.955115, 0.015544, -0.00288,
+		-0.001563, 1.004443
 	],
 	[
-		0.734766,
-		0.334872,
-		-0.069637,
-		0.05184,
-		0.919198,
-		0.028963,
-		-0.004928,
-		-0.004209,
-		1.009137
+		0.734766, 0.334872, -0.069637, 0.05184, 0.919198, 0.028963, -0.004928,
+		-0.004209, 1.009137
 	],
 	[
-		0.630323,
-		0.465641,
-		-0.095964,
-		0.069181,
-		0.890046,
-		0.040773,
-		-0.006308,
-		-0.007724,
-		1.014032
+		0.630323, 0.465641, -0.095964, 0.069181, 0.890046, 0.040773, -0.006308,
+		-0.007724, 1.014032
 	],
 	[
-		0.539009,
-		0.579343,
-		-0.118352,
-		0.082546,
-		0.866121,
-		0.051332,
-		-0.007136,
-		-0.011959,
-		1.019095
+		0.539009, 0.579343, -0.118352, 0.082546, 0.866121, 0.051332, -0.007136,
+		-0.011959, 1.019095
 	],
 	[
-		0.458064,
-		0.679578,
-		-0.137642,
-		0.092785,
-		0.846313,
-		0.060902,
-		-0.007494,
-		-0.016807,
-		1.024301
+		0.458064, 0.679578, -0.137642, 0.092785, 0.846313, 0.060902, -0.007494,
+		-0.016807, 1.024301
 	],
 	[
-		0.38545,
-		0.769005,
-		-0.154455,
-		0.100526,
-		0.829802,
-		0.069673,
-		-0.007442,
-		-0.02219,
-		1.029632
+		0.38545, 0.769005, -0.154455, 0.100526, 0.829802, 0.069673, -0.007442,
+		-0.02219, 1.029632
 	],
 	[
-		0.319627,
-		0.849633,
-		-0.169261,
-		0.106241,
-		0.815969,
-		0.07779,
-		-0.007025,
-		-0.028051,
-		1.035076
+		0.319627, 0.849633, -0.169261, 0.106241, 0.815969, 0.07779, -0.007025,
+		-0.028051, 1.035076
 	],
 	[
-		0.259411,
-		0.923008,
-		-0.18242,
-		0.110296,
-		0.80434,
-		0.085364,
-		-0.006276,
-		-0.034346,
-		1.040622
+		0.259411, 0.923008, -0.18242, 0.110296, 0.80434, 0.085364, -0.006276,
+		-0.034346, 1.040622
 	],
 	[
-		0.203876,
-		0.990338,
-		-0.194214,
-		0.112975,
-		0.794542,
-		0.092483,
-		-0.005222,
-		-0.041043,
-		1.046265
+		0.203876, 0.990338, -0.194214, 0.112975, 0.794542, 0.092483, -0.005222,
+		-0.041043, 1.046265
 	],
 	[
-		0.152286,
-		1.052583,
-		-0.204868,
-		0.114503,
-		0.786281,
-		0.099216,
-		-0.003882,
-		-0.048116,
-		1.051998
+		0.152286, 1.052583, -0.204868, 0.114503, 0.786281, 0.099216, -0.003882,
+		-0.048116, 1.051998
 	]
 ];
 
 const DEUTER = [
 	[1.0, 0.0, -0.0, 0.0, 1.0, 0.0, -0.0, -0.0, 1.0],
 	[
-		0.866435,
-		0.177704,
-		-0.044139,
-		0.049567,
-		0.939063,
-		0.01137,
-		-0.003453,
-		0.007233,
-		0.99622
+		0.866435, 0.177704, -0.044139, 0.049567, 0.939063, 0.01137, -0.003453,
+		0.007233, 0.99622
 	],
 	[
-		0.760729,
-		0.319078,
-		-0.079807,
-		0.090568,
-		0.889315,
-		0.020117,
-		-0.006027,
-		0.013325,
-		0.992702
+		0.760729, 0.319078, -0.079807, 0.090568, 0.889315, 0.020117, -0.006027,
+		0.013325, 0.992702
 	],
 	[
-		0.675425,
-		0.43385,
-		-0.109275,
-		0.125303,
-		0.847755,
-		0.026942,
-		-0.00795,
-		0.018572,
-		0.989378
+		0.675425, 0.43385, -0.109275, 0.125303, 0.847755, 0.026942, -0.00795,
+		0.018572, 0.989378
 	],
 	[
-		0.605511,
-		0.52856,
-		-0.134071,
-		0.155318,
-		0.812366,
-		0.032316,
-		-0.009376,
-		0.023176,
-		0.9862
+		0.605511, 0.52856, -0.134071, 0.155318, 0.812366, 0.032316, -0.009376,
+		0.023176, 0.9862
 	],
 	[
-		0.547494,
-		0.607765,
-		-0.155259,
-		0.181692,
-		0.781742,
-		0.036566,
-		-0.01041,
-		0.027275,
-		0.983136
+		0.547494, 0.607765, -0.155259, 0.181692, 0.781742, 0.036566, -0.01041,
+		0.027275, 0.983136
 	],
 	[
-		0.498864,
-		0.674741,
-		-0.173604,
-		0.205199,
-		0.754872,
-		0.039929,
-		-0.011131,
-		0.030969,
-		0.980162
+		0.498864, 0.674741, -0.173604, 0.205199, 0.754872, 0.039929, -0.011131,
+		0.030969, 0.980162
 	],
 	[
-		0.457771,
-		0.731899,
-		-0.18967,
-		0.226409,
-		0.731012,
-		0.042579,
-		-0.011595,
-		0.034333,
-		0.977261
+		0.457771, 0.731899, -0.18967, 0.226409, 0.731012, 0.042579, -0.011595,
+		0.034333, 0.977261
 	],
 	[
-		0.422823,
-		0.781057,
-		-0.203881,
-		0.245752,
-		0.709602,
-		0.044646,
-		-0.011843,
-		0.037423,
-		0.974421
+		0.422823, 0.781057, -0.203881, 0.245752, 0.709602, 0.044646, -0.011843,
+		0.037423, 0.974421
 	],
 	[
-		0.392952,
-		0.82361,
-		-0.216562,
-		0.263559,
-		0.69021,
-		0.046232,
-		-0.01191,
-		0.040281,
-		0.97163
+		0.392952, 0.82361, -0.216562, 0.263559, 0.69021, 0.046232, -0.01191,
+		0.040281, 0.97163
 	],
 	[
-		0.367322,
-		0.860646,
-		-0.227968,
-		0.280085,
-		0.672501,
-		0.047413,
-		-0.01182,
-		0.04294,
-		0.968881
+		0.367322, 0.860646, -0.227968, 0.280085, 0.672501, 0.047413, -0.01182,
+		0.04294, 0.968881
 	]
 ];
 
 const TRIT = [
 	[1.0, 0.0, -0.0, 0.0, 1.0, 0.0, -0.0, -0.0, 1.0],
 	[
-		0.92667,
-		0.092514,
-		-0.019184,
-		0.021191,
-		0.964503,
-		0.014306,
-		0.008437,
-		0.054813,
-		0.93675
+		0.92667, 0.092514, -0.019184, 0.021191, 0.964503, 0.014306, 0.008437,
+		0.054813, 0.93675
 	],
 	[
-		0.89572,
-		0.13333,
-		-0.02905,
-		0.029997,
-		0.9454,
-		0.024603,
-		0.013027,
-		0.104707,
-		0.882266
+		0.89572, 0.13333, -0.02905, 0.029997, 0.9454, 0.024603, 0.013027,
+		0.104707, 0.882266
 	],
 	[
-		0.905871,
-		0.127791,
-		-0.033662,
-		0.026856,
-		0.941251,
-		0.031893,
-		0.01341,
-		0.148296,
-		0.838294
+		0.905871, 0.127791, -0.033662, 0.026856, 0.941251, 0.031893, 0.01341,
+		0.148296, 0.838294
 	],
 	[
-		0.948035,
-		0.08949,
-		-0.037526,
-		0.014364,
-		0.946792,
-		0.038844,
-		0.010853,
-		0.193991,
-		0.795156
+		0.948035, 0.08949, -0.037526, 0.014364, 0.946792, 0.038844, 0.010853,
+		0.193991, 0.795156
 	],
 	[
-		1.017277,
-		0.027029,
-		-0.044306,
-		-0.006113,
-		0.958479,
-		0.047634,
-		0.006379,
-		0.248708,
-		0.744913
+		1.017277, 0.027029, -0.044306, -0.006113, 0.958479, 0.047634, 0.006379,
+		0.248708, 0.744913
 	],
 	[
-		1.104996,
-		-0.046633,
-		-0.058363,
-		-0.032137,
-		0.971635,
-		0.060503,
-		0.001336,
-		0.317922,
-		0.680742
+		1.104996, -0.046633, -0.058363, -0.032137, 0.971635, 0.060503, 0.001336,
+		0.317922, 0.680742
 	],
 	[
-		1.193214,
-		-0.109812,
-		-0.083402,
-		-0.058496,
-		0.97941,
-		0.079086,
-		-0.002346,
-		0.403492,
-		0.598854
+		1.193214, -0.109812, -0.083402, -0.058496, 0.97941, 0.079086, -0.002346,
+		0.403492, 0.598854
 	],
 	[
-		1.257728,
-		-0.139648,
-		-0.118081,
-		-0.078003,
-		0.975409,
-		0.102594,
-		-0.003316,
-		0.501214,
-		0.502102
+		1.257728, -0.139648, -0.118081, -0.078003, 0.975409, 0.102594,
+		-0.003316, 0.501214, 0.502102
 	],
 	[
-		1.278864,
-		-0.125333,
-		-0.153531,
-		-0.084748,
-		0.957674,
-		0.127074,
-		-0.000989,
-		0.601151,
-		0.399838
+		1.278864, -0.125333, -0.153531, -0.084748, 0.957674, 0.127074,
+		-0.000989, 0.601151, 0.399838
 	],
 	[
-		1.255528,
-		-0.076749,
-		-0.178779,
-		-0.078411,
-		0.930809,
-		0.147602,
-		0.004733,
-		0.691367,
-		0.3039
+		1.255528, -0.076749, -0.178779, -0.078411, 0.930809, 0.147602, 0.004733,
+		0.691367, 0.3039
 	]
 ];
 
@@ -392,8 +182,9 @@ const deficiency = (lut, t) => {
 	};
 };
 
-const deficiencyProt = (severity = 1) => deficiency(PROT, severity);
-const deficiencyDeuter = (severity = 1) => deficiency(DEUTER, severity);
-const deficiencyTrit = (severity = 1) => deficiency(TRIT, severity);
-
-export { deficiencyProt, deficiencyDeuter, deficiencyTrit };
+export const filterDeficiencyProt = (severity = 1) =>
+	deficiency(PROT, severity);
+export const filterDeficiencyDeuter = (severity = 1) =>
+	deficiency(DEUTER, severity);
+export const filterDeficiencyTrit = (severity = 1) =>
+	deficiency(TRIT, severity);
diff --git a/src/formatter.js b/src/formatter.js
index 78695d3a..8d40d1df 100644
--- a/src/formatter.js
+++ b/src/formatter.js
@@ -10,7 +10,7 @@ let twoDecimals = round(2);
 const clamp = value => Math.max(0, Math.min(1, value));
 const fixup = value => Math.round(clamp(value) * 255);
 
-const formatHex = c => {
+export const formatHex = c => {
 	let color = rgb(c);
 
 	if (color === undefined) {
@@ -24,7 +24,7 @@ const formatHex = c => {
 	return '#' + ((1 << 24) | (r << 16) | (g << 8) | b).toString(16).slice(1);
 };
 
-const formatHex8 = c => {
+export const formatHex8 = c => {
 	let color = rgb(c);
 
 	if (color === undefined) {
@@ -36,7 +36,7 @@ const formatHex8 = c => {
 	return formatHex(color) + ((1 << 8) | a).toString(16).slice(1);
 };
 
-const formatRgb = c => {
+export const formatRgb = c => {
 	let color = rgb(c);
 
 	if (color === undefined) {
@@ -56,7 +56,7 @@ const formatRgb = c => {
 	}
 };
 
-const formatHsl = c => {
+export const formatHsl = c => {
 	let color = hsl(c);
 
 	if (color === undefined) {
@@ -76,7 +76,7 @@ const formatHsl = c => {
 	}
 };
 
-const formatCss = c => {
+export const formatCss = c => {
 	const color = prepare(c);
 	if (!color) {
 		return undefined;
@@ -99,16 +99,3 @@ const formatCss = c => {
 	}
 	return undefined;
 };
-
-// Deprecated / no longer documented
-const formatter = (format = 'rgb') => {
-	switch (format) {
-		case 'rgb':
-			return formatRgb;
-		case 'hex':
-			return formatHex;
-	}
-	return undefined;
-};
-
-export { formatHex, formatHex8, formatRgb, formatHsl, formatCss, formatter };
diff --git a/src/index.js b/src/index.js
index e7217ac6..cd3969bb 100644
--- a/src/index.js
+++ b/src/index.js
@@ -114,7 +114,6 @@ export {
 };
 
 export {
-	formatter,
 	formatHex,
 	formatHex8,
 	formatRgb,
@@ -128,30 +127,21 @@ export {
 	interpolateWithPremultipliedAlpha
 } from './interpolate/interpolate';
 
-export {
-	interpolateLinear, // @deprecated
-	interpolatorLinear
-} from './interpolate/linear';
+export { interpolatorLinear } from './interpolate/linear';
 
 export { interpolatorPiecewise } from './interpolate/piecewise';
 
-// @deprecated
-export { default as interpolateCosine } from './interpolate/cosine';
-
 export {
-	interpolateSplineBasis, // @deprecated
 	interpolatorSplineBasis,
 	interpolatorSplineBasisClosed
 } from './interpolate/splineBasis';
 
 export {
-	interpolateSplineNatural, // @deprecated
 	interpolatorSplineNatural,
 	interpolatorSplineNaturalClosed
 } from './interpolate/splineNatural';
 
 export {
-	interpolateSplineMonotone, // @deprecated
 	interpolatorSplineMonotone,
 	interpolatorSplineMonotone2,
 	interpolatorSplineMonotoneClosed
@@ -160,7 +150,7 @@ export {
 export { default as lerp } from './interpolate/lerp';
 export { default as samples } from './samples';
 export { default as displayable } from './displayable';
-export { clamp, clampRgb, clampChroma } from './clamp';
+export { clampRgb, clampChroma } from './clamp';
 export { default as nearest } from './nearest';
 export { getModeDefinition } from './modes';
 export { default as parse } from './parse';
@@ -191,27 +181,19 @@ export { default as easingGamma } from './easing/gamma';
 export { luminance as wcagLuminance, contrast as wcagContrast } from './wcag';
 
 export {
-	deficiencyProt as filterDeficiencyProt,
-	deficiencyDeuter as filterDeficiencyDeuter,
-	deficiencyTrit as filterDeficiencyTrit,
-	// @deprecated
-	deficiencyProt,
-	deficiencyDeuter,
-	deficiencyTrit
+	filterDeficiencyProt,
+	filterDeficiencyDeuter,
+	filterDeficiencyTrit
 } from './deficiency';
 
 export {
-	fixupHueShorter as interpolateHue, // @deprecated
 	fixupHueShorter,
 	fixupHueLonger,
 	fixupHueIncreasing,
 	fixupHueDecreasing
 } from './fixup/hue';
 
-export {
-	fixupAlpha,
-	fixupAlpha as interpolateAlpha // @deprecated
-} from './fixup/alpha';
+export { fixupAlpha } from './fixup/alpha';
 
 export {
 	mapper,
diff --git a/src/interpolate/cosine.js b/src/interpolate/cosine.js
deleted file mode 100644
index e952b405..00000000
--- a/src/interpolate/cosine.js
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
-	Cosine interpolation
-	--------------------
-
-	Reference: 
-
-		http://paulbourke.net/miscellaneous/interpolation/
- */
-
-import lerp from './lerp';
-import easeInOutSine from '../easing/inOutSine';
-import gamma from '../easing/gamma';
-import { interpolatorPiecewise } from './piecewise';
-
-// @deprecated
-const cosine = (fixup, γ = 1) => arr => {
-	let ease = gamma(γ);
-	let interpolator = interpolatorPiecewise((a, b, t) =>
-		lerp(a, b, easeInOutSine(t))
-	)((fixup || (v => v))(arr));
-	return t => interpolator(ease(t));
-};
-
-export default cosine;
diff --git a/src/interpolate/linear.js b/src/interpolate/linear.js
index 1863b631..d9d93b47 100644
--- a/src/interpolate/linear.js
+++ b/src/interpolate/linear.js
@@ -1,16 +1,4 @@
 import lerp from './lerp';
-import gamma from '../easing/gamma';
 import { interpolatorPiecewise } from './piecewise';
 
-const interpolatorLinear = interpolatorPiecewise(lerp);
-
-const interpolateLinear = (fixup, γ = 1) => arr => {
-	let ease = gamma(γ);
-	return t => interpolatorLinear((fixup || (v => v))(arr))(ease(t));
-};
-
-export {
-	interpolatorLinear,
-	// legacy
-	interpolateLinear
-};
+export const interpolatorLinear = interpolatorPiecewise(lerp);
diff --git a/src/interpolate/splineBasis.js b/src/interpolate/splineBasis.js
index dfdb6f63..fc887c8b 100644
--- a/src/interpolate/splineBasis.js
+++ b/src/interpolate/splineBasis.js
@@ -1,5 +1,3 @@
-import gamma from '../easing/gamma';
-
 /*
 	Basis spline
 	------------
@@ -35,7 +33,7 @@ const bspline = (Vim2, Vim1, Vi, Vip1, t) => {
 	);
 };
 
-const interpolatorSplineBasis = arr => t => {
+export const interpolatorSplineBasis = arr => t => {
 	let classes = arr.length - 1;
 	let i = t >= 1 ? classes - 1 : Math.max(0, Math.floor(t * classes));
 	return bspline(
@@ -47,7 +45,7 @@ const interpolatorSplineBasis = arr => t => {
 	);
 };
 
-const interpolatorSplineBasisClosed = arr => t => {
+export const interpolatorSplineBasisClosed = arr => t => {
 	const classes = arr.length - 1;
 	const i = Math.floor(t * classes);
 	return bspline(
@@ -58,24 +56,3 @@ const interpolatorSplineBasisClosed = arr => t => {
 		(t - i / classes) * classes
 	);
 };
-
-const interpolateSplineBasis =
-	(fixup, type = 'default', γ = 1) =>
-	arr => {
-		let ease = gamma(γ);
-		if (type === 'default') {
-			return t =>
-				interpolatorSplineBasis((fixup || (v => v))(arr))(ease(t));
-		} else if (type === 'closed') {
-			return t =>
-				interpolatorSplineBasisClosed((fixup || (v => v))(arr))(
-					ease(t)
-				);
-		}
-	};
-
-export {
-	interpolateSplineBasis,
-	interpolatorSplineBasis,
-	interpolatorSplineBasisClosed
-};
diff --git a/src/interpolate/splineMonotone.js b/src/interpolate/splineMonotone.js
index dac3da47..17657123 100644
--- a/src/interpolate/splineMonotone.js
+++ b/src/interpolate/splineMonotone.js
@@ -1,4 +1,3 @@
-import gamma from '../easing/gamma';
 import { interpolatorLinear } from './linear';
 
 /* 
@@ -65,7 +64,7 @@ const interpolator = (arr, yp, s) => {
 	A monotone spline which uses one-sided finite differences
 	at the boundaries.
  */
-const interpolatorSplineMonotone = arr => {
+export const interpolatorSplineMonotone = arr => {
 	if (arr.length < 3) {
 		return interpolatorLinear(arr);
 	}
@@ -85,7 +84,7 @@ const interpolatorSplineMonotone = arr => {
 	linear interpolation.
  */
 
-const interpolatorSplineMonotone2 = arr => {
+export const interpolatorSplineMonotone2 = arr => {
 	if (arr.length < 3) {
 		return interpolatorLinear(arr);
 	}
@@ -112,7 +111,7 @@ const interpolatorSplineMonotone2 = arr => {
 
 	...and so on.
  */
-const interpolatorSplineMonotoneClosed = arr => {
+export const interpolatorSplineMonotoneClosed = arr => {
 	let n = arr.length - 1;
 	let [s, p, yp] = mono(arr);
 	// boundary conditions
@@ -127,25 +126,3 @@ const interpolatorSplineMonotoneClosed = arr => {
 		min(abs(s[n - 1]), abs(s_n), 0.5 * abs(p[n]));
 	return interpolator(arr, yp, s);
 };
-
-const interpolateSplineMonotone =
-	(fixup, type = 'default', γ = 1) =>
-	arr => {
-		let ease = gamma(γ);
-		if (type === 'closed') {
-			return t =>
-				interpolatorSplineMonotoneClosed((fixup || (v => v))(arr))(
-					ease(t)
-				);
-		} else if (type === 'default') {
-			return t =>
-				interpolatorSplineMonotone((fixup || (v => v))(arr))(ease(t));
-		}
-	};
-
-export {
-	interpolateSplineMonotone,
-	interpolatorSplineMonotone,
-	interpolatorSplineMonotone2,
-	interpolatorSplineMonotoneClosed
-};
diff --git a/src/interpolate/splineNatural.js b/src/interpolate/splineNatural.js
index 09d1ad76..1f33bc8e 100644
--- a/src/interpolate/splineNatural.js
+++ b/src/interpolate/splineNatural.js
@@ -2,7 +2,6 @@ import {
 	interpolatorSplineBasisClosed,
 	interpolatorSplineBasis
 } from './splineBasis';
-import gamma from '../easing/gamma';
 
 const solve = v => {
 	let i;
@@ -32,23 +31,7 @@ const solve = v => {
 	return sol;
 };
 
-const interpolatorSplineNatural = arr => interpolatorSplineBasis(solve(arr));
-const interpolatorSplineNaturalClosed = arr =>
+export const interpolatorSplineNatural = arr =>
+	interpolatorSplineBasis(solve(arr));
+export const interpolatorSplineNaturalClosed = arr =>
 	interpolatorSplineBasisClosed(solve(arr));
-
-const interpolateSplineNatural = (fixup, type = 'default', γ = 1) => arr => {
-	let ease = gamma(γ);
-	if (type === 'default') {
-		return t =>
-			interpolatorSplineNatural((fixup || (v => v))(arr))(ease(t));
-	} else if (type === 'closed') {
-		return t =>
-			interpolatorSplineNaturalClosed((fixup || (v => v))(arr))(ease(t));
-	}
-};
-
-export {
-	interpolateSplineNatural,
-	interpolatorSplineNatural,
-	interpolatorSplineNaturalClosed
-};
diff --git a/test/interpolate-legacy.test.js b/test/interpolate-legacy.test.js
deleted file mode 100644
index 1a83bf05..00000000
--- a/test/interpolate-legacy.test.js
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
-	Interpolation: legacy API
- */
-
-import tape from 'tape';
-import {
-	interpolate,
-	interpolateLinear,
-	interpolateHue,
-	formatHex
-} from '../src/index';
-
-tape('custom interpolators', t => {
-	let interpolator = interpolate(['red', 'green'], 'hsv', {
-		h: interpolateLinear(interpolateHue)
-	});
-
-	t.deepEqual(formatHex(interpolator(0.5)), '#c0c000');
-	t.end();
-});