Merge pull request #66 from vivliostyle/fix/issue65

fix: Stop using api.npms.io that fails to get the latest package information

src/themes.ts

@@ -3,7 +3,7 @@ import chalk from 'chalk'
 
 export interface SearchResponse {
  total: number
- results: Result[]
+ objects: Result[]
 }
 
 export interface Result {
@@ -90,12 +90,14 @@ export type ThemeInfo = {
 const KEYWORD = 'vivliostyle-theme'
 
 export async function listThemes(): Promise<Result[]> {
- const res = await fetch(`https://api.npms.io/v2/search?q=keywords:${KEYWORD}`)
+ const res = await fetch(
+ `https://registry.npmjs.org/-/v1/search?text=keywords:${KEYWORD}`
+ )
  if (res.ok) {
- return ((await res.json()) as SearchResponse).results
+ return ((await res.json()) as SearchResponse).objects
  } else {
  throw new Error(
- `Failed to get the theme information from https://api.npms.io, HTTP status code: "${res.status}"`
+ `Failed to get the theme information from https://registry.npmjs.org, HTTP status code: "${res.status}"`
  )
  }
 }