Function resolveVariableInConfig

src/configuration.ts:1218–1250

(
  config: T,
  varName: string,
  varValue: string | undefined,
)

}

export function resolveVariableInConfig<T>(
  config: T,
  varName: string,
  varValue: string | undefined,
): T {
  let out: unknown;
  if (typeof config === 'string') {
    out = config.replace(new RegExp(`\\$\\{${varName}\\}`, 'g'), () => {
      if (!varValue) {
        throw new Error(
          `Unable to resolve \${${varName}} in configuration (${JSON.stringify(varName)})`,
        );
      }
      return varValue;
    });
  } else if (config instanceof Array) {
    out = config.map(cfg => resolveVariableInConfig(cfg, varName, varValue));
  } else if (typeof config === 'object' && config) {
    const obj: { [key: string]: unknown } = {};
    for (const [key, value] of Object.entries(config)) {
      obj[resolveVariableInConfig(key, varName, varValue)] = resolveVariableInConfig(
        value,
        varName,
        varValue,
      );
    }
    out = obj;
  } else {
    out = config;
  }

  return out as T;
}

export const breakpointLanguages: ReadonlyArray<string> = [
  'javascript',