build_types.ts

 1import * as fs from "fs/promises"
 2import * as fsSync from "fs"
 3import * as path from "path"
 4import { compile } from "json-schema-to-typescript"
 5
 6const BANNER = `/*
 7* This file is autogenerated
 8*/\n\n`
 9const dirname = __dirname
10
11async function main() {
12    const schemas_path = path.join(dirname, "../../", "crates/theme/schemas")
13    const schema_files = (await fs.readdir(schemas_path)).filter((x) =>
14        x.endsWith(".json")
15    )
16
17    const compiled_types = new Set()
18
19    for (const filename of schema_files) {
20        const file_path = path.join(schemas_path, filename)
21        const file_contents = await fs.readFile(file_path)
22        const schema = JSON.parse(file_contents.toString())
23        const compiled = await compile(schema, schema.title, {
24            bannerComment: "",
25        })
26        const each_type = compiled.split("export")
27        for (const type of each_type) {
28            if (!type) {
29                continue
30            }
31            compiled_types.add("export " + type.trim())
32        }
33    }
34
35    const output = BANNER + Array.from(compiled_types).join("\n\n")
36    const output_path = path.join(dirname, "../../styles/src/types/zed.ts")
37
38    try {
39        const existing = await fs.readFile(output_path)
40        if (existing.toString() == output) {
41            // Skip writing if it hasn't changed
42            console.log("Schemas are up to date")
43            return
44        }
45    } catch (e) {
46        if (e.code !== "ENOENT") {
47            throw e
48        }
49    }
50
51    const types_dic = path.dirname(output_path)
52    if (!fsSync.existsSync(types_dic)) {
53        await fs.mkdir(types_dic)
54    }
55    await fs.writeFile(output_path, output)
56    console.log(`Wrote Typescript types to ${output_path}`)
57}
58
59main().catch((e) => {
60    console.error(e)
61    process.exit(1)
62})