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package server
import (	"bytes"	"fmt"	"testing")
func TestDtsWalker(t *testing.T) {	const rawDts = `/* * This is a multi-line comment. * @example: import("react") */// This is a single-line comment. import("react")// import React from "react";/// <reference path="global.d.ts" />
import * as CSS from 'csstype';import * as PropTypes from 'prop-types';import type { Interaction as SchedulerInteraction } /* bad comment */ from "scheduler/tracing";import DefaultExport, { AndNamed } from "scheduler/tracing";
export * from "react";export = React;
// todo: support: export const weird: "import('react')";
import React = import('react');import React = require("react");`
	const expectedDts = `/* * This is a multi-line comment. * @example: import("react") */// This is a single-line comment. import("react")// import React from "react";/// <reference path="./global.d.ts" />
import * as CSS from 'https://esm.sh/csstype@1.0.0/index.d.ts';import * as PropTypes from 'https://esm.sh/prop-types@1.0.0/index.d.ts';import type { Interaction as SchedulerInteraction } /* bad comment */ from "https://esm.sh/scheduler@1.0.0/tracing.d.ts";import DefaultExport, { AndNamed } from "https://esm.sh/scheduler@1.0.0/tracing.d.ts";
export * from "https://esm.sh/@types/react@1.0.0/index.d.ts";export = React;
// todo: support: export const weird: "import('react')";
import React = import('https://esm.sh/@types/react@1.0.0/index.d.ts');import React = require("https://esm.sh/@types/react@1.0.0/index.d.ts");`
	buf := bytes.NewBuffer(nil)	err := walkDts(bytes.NewReader([]byte(rawDts)), buf, func(name string, kind string, position int) string {		if kind == "importExpr" || kind == "importCall" {			if name == "react" || name == "react-dom" {				return fmt.Sprintf("https://esm.sh/@types/%s@1.0.0/index.d.ts", name)			}			pkgName, _, subPath := splitPkgPath(name)			if subPath != "" {				return fmt.Sprintf("https://esm.sh/%s@1.0.0/%s.d.ts", pkgName, subPath)			}			return fmt.Sprintf("https://esm.sh/%s@1.0.0/index.d.ts", pkgName)		}		return name	})	if err != nil {		t.Fatal(err)	}
	if buf.String() != expectedDts {		t.Fatal("transformed dts not match, want:", expectedDts, "got:", buf.String())	}}