DefinitelyTyped/types/chroma-js/chroma-js-tests.ts

function test_chroma() {
    chroma('hotpink');
    chroma('#ff3399');
    chroma('F39');
    chroma.hex("#fff");

    chroma(0xff3399);
    chroma(0xff, 0x33, 0x99);
    chroma(255, 51, 153);
    chroma([255, 51, 153]);
    chroma(330, 1, 0.6, 'hsl');
    chroma.hsl(330, 1, 0.6);
    chroma.lch(80, 40, 130);
    chroma(80, 40, 130, 'lch');
    chroma.cmyk(0.2, 0.8, 0, 0);
    chroma(0.2, 0.8, 0, 0, 'cmyk');
    chroma.gl(0.6, 0, 0.8);
    chroma.gl(0.6, 0, 0.8, 0.5);
    chroma(0.6, 0, 0.8, 'gl');
    chroma.temperature(2000);
    chroma.temperature(3500);
    chroma.temperature(6000);
    chroma.mix('red', 'blue');
    chroma.mix('red', 'blue', 0.25);
    chroma.mix('red', 'blue', 0.5, 'rgb');
    chroma.mix('red', 'blue', 0.5, 'hsl');
    chroma.mix('red', 'blue', 0.5, 'lab');
    chroma.mix('red', 'blue', 0.5, 'lch');
    chroma.blend('4CBBFC', 'EEEE22', 'multiply');
    chroma.blend('4CBBFC', 'EEEE22', 'darken');
    chroma.blend('4CBBFC', 'EEEE22', 'lighten');
    chroma.random();
    chroma.contrast('pink', 'hotpink');
    chroma.contrast('pink', 'purple');
    chroma.brewer.OrRd;
    const data = [3.0, 3.5, 3.6, 3.8, 3.8, 4.1, 4.3, 4.4,
        4.6, 4.9, 5.2, 5.3, 5.4, 5.7, 5.8, 5.9,
        6.2, 6.5, 6.8, 7.2, 9];
    chroma.limits(data, 'e', 5);
    chroma.limits(data, 'q', 5);
    chroma.limits(data, 'k', 5);

    chroma(0xff3399);
    chroma.limits(data, 'k', 5);
}

function test_color() {
    chroma('red').alpha(0.5);
    chroma('rgba(255,0,0,0.35)').alpha();
    chroma('hotpink').darken();
    chroma('hotpink').darken(2);
    chroma('hotpink').brighten();
    chroma('slategray').saturate();
    chroma('slategray').saturate(2);
    chroma('hotpink').desaturate();
    chroma('hotpink').desaturate(2);
    chroma('hotpink').desaturate(3);
    // change hue to 0 deg (=red)
    chroma('skyblue').set('hsl.h', 0);
    // set chromacity to 30
    chroma('hotpink').set('lch.c', 30);
    // half Lab lightness
    chroma('orangered').set('lab.l', '*0.5');
    // double Lch saturation
    chroma('darkseagreen').set('lch.c', '*2');
    chroma('orangered').get('lab.l');
    chroma('orangered').get('hsl.l');
    chroma('orangered').get('rgb.g');
    chroma('white').luminance();
    chroma('aquamarine').luminance();
    chroma('hotpink').luminance();
    chroma('darkslateblue').luminance();
    chroma('black').luminance();
    chroma('white').luminance(0.5);
    chroma('aquamarine').luminance(0.5);
    chroma('hotpink').luminance(0.5);
    chroma('darkslateblue').luminance(0.5);
    chroma('aquamarine').luminance(0.5);
    chroma('aquamarine').luminance(0.5, 'lab');
    chroma('aquamarine').luminance(0.5, 'hsl');
    chroma('orange').hex();
    chroma('#ffa500').name();
    chroma('#ffa505').name();
    chroma('teal').css();
    chroma('teal').alpha(0.5).css();
    chroma('teal').css('hsl');
    chroma('orange').rgb();
    chroma('orange').hsl();
    chroma('white').hsl();
    chroma('orange').hsv();
    chroma('white').hsv();
    chroma('orange').hsi();
    chroma('white').hsi();
    chroma('orange').lab();
    chroma('skyblue').lch();
    chroma('skyblue').hcl();
    chroma('#ff3300').temperature();
    chroma('#ff8a13').temperature();
    chroma('#ffe3cd').temperature();
    chroma('#cbdbff').temperature();
    chroma('#b3ccff').temperature();
    chroma('33cc00').gl();

    chroma('teal').alpha(0.5).css();
    chroma('teal').css('hsl');
    chroma('orange').rgb();
}

function test_scale() {
    const f = chroma.scale();
    f(0.25);
    f(0.5);
    f(0.75);
    chroma.scale(['yellow', '008ae5']);
    chroma.scale(['yellow', 'red', 'black']);
    // default domain is [0,1]
    chroma.scale(['yellow', '008ae5']);
    // set domain to [0,100]
    chroma.scale(['yellow', '008ae5']).domain([0, 100]);
    // default domain is [0,1]
    chroma.scale(['yellow', 'lightgreen', '008ae5'])
        .domain([0, 0.25, 1]);
    chroma.scale(['yellow', '008ae5']);
    chroma.scale(['yellow', 'navy']);
    chroma.scale(['yellow', 'navy']).mode('lab');
    chroma.scale(['yellow', 'navy']).mode('lab');
    chroma.scale(['yellow', 'navy']).mode('hsl');
    chroma.scale(['yellow', 'navy']).mode('lch');
    chroma.scale('YlGnBu');
    chroma.scale('Spectral');
    chroma.scale('Spectral').domain([1, 0]);
    chroma.brewer.OrRd;
    chroma.scale(['yellow', '008ae5']).mode('lch');

    chroma.scale(['yellow', '008ae5'])
        .mode('lch')
        .correctLightness();
    // linear interpolation
    chroma.scale(['yellow', 'red', 'black']);
    // bezier interpolation
    chroma.bezier(['yellow', 'red', 'black']);
    // convert bezier interpolator into chroma.scale
    chroma.bezier(['yellow', 'red', 'black'])
        .scale().colors(5);
    // use the default helix...
    chroma.cubehelix();
    // or customize it
    chroma.cubehelix()
        .start(200)
        .rotations(-0.5)
        .gamma(0.8)
        .lightness([0.3, 0.8]);

    chroma.cubehelix()
        .start(200)
        .rotations(-0.35)
        .gamma(0.7)
        .lightness([0.3, 0.8])
        .scale() // convert to chroma.scale
        .correctLightness()
        .colors(5);

    chroma.scale('RdYlBu');
    chroma.scale('RdYlBu').padding(0.15);

    chroma.scale('OrRd');
    chroma.scale('OrRd').padding([0.2, 0]);

    chroma.scale('OrRd').classes(5);
    chroma.scale('OrRd').classes(8);

    chroma.cubehelix()
        .start(200)
        .rotations(-0.35)
        .gamma(0.7)
        .lightness([0.3, 0.8])
        .scale() // convert to chroma.scale

        .correctLightness()
        .colors(5);

    chroma.scale('RdYlBu');
    chroma.scale('RdYlBu').padding(0.15);
}

function test_types() {
    const color: chroma.Color = chroma('orange');
    const scale: chroma.Scale = chroma.scale('RdYlBu');
}