@uiw/codemirror-theme-nord/src/index.ts

Theme nord for CodeMirror.

import { tags as t } from '@lezer/highlight';
import { createTheme, type CreateThemeOptions } from '@uiw/codemirror-themes';

export const defaultSettingsNord: CreateThemeOptions['settings'] = {
  background: '#2e3440',
  foreground: '#FFFFFF',
  caret: '#FFFFFF',
  selection: '#00000073',
  selectionMatch: '#00000073',
  gutterBackground: '#2e3440',
  gutterForeground: '#4c566a',
  gutterActiveForeground: '#d8dee9',
  lineHighlight: '#4c566a29',
};

export const nordDarkStyle: CreateThemeOptions['styles'] = [
  { tag: t.keyword, color: '#5e81ac' },
  { tag: [t.name, t.deleted, t.character, t.propertyName, t.macroName], color: '#88c0d0' },
  { tag: [t.variableName], color: '#8fbcbb' },
  { tag: [t.function(t.variableName)], color: '#8fbcbb' },
  { tag: [t.labelName], color: '#81a1c1' },
  { tag: [t.color, t.constant(t.name), t.standard(t.name)], color: '#5e81ac' },
  { tag: [t.definition(t.name), t.separator], color: '#a3be8c' },
  { tag: [t.brace], color: '#8fbcbb' },
  { tag: [t.annotation], color: '#d30102' },
  { tag: [t.number, t.changed, t.annotation, t.modifier, t.self, t.namespace], color: '#b48ead' },
  { tag: [t.typeName, t.className], color: '#ebcb8b' },
  { tag: [t.operator, t.operatorKeyword], color: '#a3be8c' },
  { tag: [t.tagName], color: '#b48ead' },
  { tag: [t.squareBracket], color: '#bf616a' },
  { tag: [t.angleBracket], color: '#d08770' },
  { tag: [t.attributeName], color: '#ebcb8b' },
  { tag: [t.regexp], color: '#5e81ac' },
  { tag: [t.quote], color: '#b48ead' },
  { tag: [t.string], color: '#a3be8c' },
  {
    tag: t.link,
    color: '#a3be8c',
    textDecoration: 'underline',
    textUnderlinePosition: 'under',
  },
  { tag: [t.url, t.escape, t.special(t.string)], color: '#8fbcbb' },
  { tag: [t.meta], color: '#88c0d0' },
  { tag: [t.monospace], color: '#d8dee9', fontStyle: 'italic' },
  { tag: [t.comment], color: '#4c566a', fontStyle: 'italic' },
  { tag: t.strong, fontWeight: 'bold', color: '#5e81ac' },
  { tag: t.emphasis, fontStyle: 'italic', color: '#5e81ac' },
  { tag: t.strikethrough, textDecoration: 'line-through' },
  { tag: t.heading, fontWeight: 'bold', color: '#5e81ac' },
  { tag: t.special(t.heading1), fontWeight: 'bold', color: '#5e81ac' },
  { tag: t.heading1, fontWeight: 'bold', color: '#5e81ac' },
  {
    tag: [t.heading2, t.heading3, t.heading4],
    fontWeight: 'bold',
    color: '#5e81ac',
  },
  { tag: [t.heading5, t.heading6], color: '#5e81ac' },
  { tag: [t.atom, t.bool, t.special(t.variableName)], color: '#d08770' },
  { tag: [t.processingInstruction, t.inserted], color: '#8fbcbb' },
  { tag: [t.contentSeparator], color: '#ebcb8b' },
  { tag: t.invalid, color: '#434c5e', borderBottom: `1px dotted #d30102` },
];

// Colors from https://www.nordtheme.com/docs/colors-and-palettes
export const nordInit = (options?: Partial<CreateThemeOptions>) => {
  const { theme = 'dark', settings = {}, styles = [] } = options || {};
  return createTheme({
    theme: theme,
    settings: {
      ...defaultSettingsNord,
      ...settings,
    },
    styles: [...nordDarkStyle, ...styles],
  });
};

export const nord = nordInit();