@tma.js/theme-params 
Provides utilities to work with Telegram Mini Apps theme.
DANGER
This project has been deprecated. All its functionality was moved to the @tma.js/sdk package.
Installation 
bash
pnpm i @tma.js/theme-paramspnpm i @tma.js/theme-paramsbash
npm i @tma.js/theme-paramsnpm i @tma.js/theme-paramsbash
yarn add @tma.js/theme-paramsyarn add @tma.js/theme-paramsParsing 
To parse value as theme parameters, package provides method parse and parser themeParams which is being utilized by parse.
Method and parser accept JSON object as a string or a JavaScript object, returning the ThemeParams interface. It throws an error if the passed data is invalid.
typescript
import { parse, themeParams } from '@tma.js/theme-params';
const json = {
  accent_text_color: "#6ab2f2",
  bg_color: "#17212b",
  button_color: "#5288c1",
  button_text_color: "#ffffff",
  destructive_text_color: "#ec3942",
  header_bg_color: "#17212b",
  hint_color: "#708499",
  link_color: "#6ab3f3",
  secondary_bg_color: "#232e3c",
  section_bg_color: "#17212b",
  section_header_text_color: "#6ab3f3",
  subtitle_text_color: "#708499",
  text_color: "#f5f5f5"
};
const tp = parse(json);
// or
const tp = themeParams().parse(json);import { parse, themeParams } from '@tma.js/theme-params';
const json = {
  accent_text_color: "#6ab2f2",
  bg_color: "#17212b",
  button_color: "#5288c1",
  button_text_color: "#ffffff",
  destructive_text_color: "#ec3942",
  header_bg_color: "#17212b",
  hint_color: "#708499",
  link_color: "#6ab3f3",
  secondary_bg_color: "#232e3c",
  section_bg_color: "#17212b",
  section_header_text_color: "#6ab3f3",
  subtitle_text_color: "#708499",
  text_color: "#f5f5f5"
};
const tp = parse(json);
// or
const tp = themeParams().parse(json);typescript
const result = {
  accentTextColor: "#6ab2f2",
  backgroundColor: "#17212b",
  buttonColor: "#5288c1",
  buttonTextColor: "#ffffff",
  destructiveTextColor: "#ec3942",
  headerBackgroundColor: "#17212b",
  hintColor: "#708499",
  linkColor: "#6ab3f3",
  secondaryBackgroundColor: "#232e3c",
  sectionBackgroundColor: "#17212b",
  sectionHeaderTextColor: "#6ab3f3",
  subtitleTextColor: "#708499",
  textColor: "#f5f5f5"
};const result = {
  accentTextColor: "#6ab2f2",
  backgroundColor: "#17212b",
  buttonColor: "#5288c1",
  buttonTextColor: "#ffffff",
  destructiveTextColor: "#ec3942",
  headerBackgroundColor: "#17212b",
  hintColor: "#708499",
  linkColor: "#6ab3f3",
  secondaryBackgroundColor: "#232e3c",
  sectionBackgroundColor: "#17212b",
  sectionHeaderTextColor: "#6ab3f3",
  subtitleTextColor: "#708499",
  textColor: "#f5f5f5"
};Assuming each property is written using snake case, the parsing function replaces the word 'bg' with 'background' and converts the resulting key to camel case.
Serializing 
To convert the theme parameters object representation to a string, developers should use the serialize function:
typescript
import { serialize } from '@tma.js/theme-params';
serialize({
  accentTextColor: "#6ab2f2",
  backgroundColor: "#17212b",
  buttonColor: "#5288c1",
  buttonTextColor: "#ffffff",
  destructiveTextColor: "#ec3942",
  headerBackgroundColor: "#17212b",
  hintColor: "#708499",
  linkColor: "#6ab3f3",
  secondaryBackgroundColor: "#232e3c",
  sectionBackgroundColor: "#17212b",
  sectionHeaderTextColor: "#6ab3f3",
  subtitleTextColor: "#708499",
  textColor: "#f5f5f5"
});
// Result:
// '{"accent_text_color":"#6ab2f2","bg_color":"#17212b","button_color":"#5288c1","button_text_color":"#ffffff","destructive_text_color":"#ec3942","header_bg_color":"#17212b","hint_color":"#708499","link_color":"#6ab3f3","secondary_bg_color":"#232e3c","section_bg_color":"#17212b","section_header_text_color":"#6ab3f3","subtitle_text_color":"#708499","text_color":"#f5f5f5"}'import { serialize } from '@tma.js/theme-params';
serialize({
  accentTextColor: "#6ab2f2",
  backgroundColor: "#17212b",
  buttonColor: "#5288c1",
  buttonTextColor: "#ffffff",
  destructiveTextColor: "#ec3942",
  headerBackgroundColor: "#17212b",
  hintColor: "#708499",
  linkColor: "#6ab3f3",
  secondaryBackgroundColor: "#232e3c",
  sectionBackgroundColor: "#17212b",
  sectionHeaderTextColor: "#6ab3f3",
  subtitleTextColor: "#708499",
  textColor: "#f5f5f5"
});
// Result:
// '{"accent_text_color":"#6ab2f2","bg_color":"#17212b","button_color":"#5288c1","button_text_color":"#ffffff","destructive_text_color":"#ec3942","header_bg_color":"#17212b","hint_color":"#708499","link_color":"#6ab3f3","secondary_bg_color":"#232e3c","section_bg_color":"#17212b","section_header_text_color":"#6ab3f3","subtitle_text_color":"#708499","text_color":"#f5f5f5"}' Telegram Mini Apps
Telegram Mini Apps