bundler_tsconfig_test.go

package bundler

import (
	"testing"

	"github.com/evanw/esbuild/internal/config"
)

var tsconfig_suite = suite{
	name: "tsconfig",
}

func TestTsConfigPaths(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.ts": `
				import baseurl_dot from './baseurl_dot'
				import baseurl_nested from './baseurl_nested'
				console.log(baseurl_dot, baseurl_nested)
			`,

			// Tests with "baseUrl": "."
			"/Users/user/project/baseurl_dot/index.ts": `
				import test0 from 'test0'
				import test1 from 'test1/foo'
				import test2 from 'test2/foo'
				import test3 from 'test3/foo'
				import test4 from 'test4/foo'
				import test5 from 'test5/foo'
				import absoluteIn from './absolute-in'
				import absoluteInStar from './absolute-in-star'
				import absoluteOut from './absolute-out'
				import absoluteOutStar from './absolute-out-star'
				export default {
					test0,
					test1,
					test2,
					test3,
					test4,
					test5,
					absoluteIn,
					absoluteInStar,
					absoluteOut,
					absoluteOutStar,
				}
			`,
			"/Users/user/project/baseurl_dot/tsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": ".",
						"paths": {
							"test0": ["./test0-success.ts"],
							"test1/*": ["./test1-success.ts"],
							"test2/*": ["./test2-success/*"],
							"t*t3/foo": ["./test3-succ*s.ts"],
							"test4/*": ["./test4-first/*", "./test4-second/*"],
							"test5/*": ["./test5-first/*", "./test5-second/*"],
							"/virtual-in/test": ["./actual/test"],
							"/virtual-in-star/*": ["./actual/*"],
							"/virtual-out/test": ["/Users/user/project/baseurl_dot/actual/test"],
							"/virtual-out-star/*": ["/Users/user/project/baseurl_dot/actual/*"],
						}
					}
				}
			`,
			"/Users/user/project/baseurl_dot/test0-success.ts": `
				export default 'test0-success'
			`,
			"/Users/user/project/baseurl_dot/test1-success.ts": `
				export default 'test1-success'
			`,
			"/Users/user/project/baseurl_dot/test2-success/foo.ts": `
				export default 'test2-success'
			`,
			"/Users/user/project/baseurl_dot/test3-success.ts": `
				export default 'test3-success'
			`,
			"/Users/user/project/baseurl_dot/test4-first/foo.ts": `
				export default 'test4-success'
			`,
			"/Users/user/project/baseurl_dot/test5-second/foo.ts": `
				export default 'test5-success'
			`,
			"/Users/user/project/baseurl_dot/absolute-in.ts": `
				export {default} from '/virtual-in/test'
			`,
			"/Users/user/project/baseurl_dot/absolute-in-star.ts": `
				export {default} from '/virtual-in-star/test'
			`,
			"/Users/user/project/baseurl_dot/absolute-out.ts": `
				export {default} from '/virtual-out/test'
			`,
			"/Users/user/project/baseurl_dot/absolute-out-star.ts": `
				export {default} from '/virtual-out-star/test'
			`,
			"/Users/user/project/baseurl_dot/actual/test.ts": `
				export default 'absolute-success'
			`,

			// Tests with "baseUrl": "nested"
			"/Users/user/project/baseurl_nested/index.ts": `
				import test0 from 'test0'
				import test1 from 'test1/foo'
				import test2 from 'test2/foo'
				import test3 from 'test3/foo'
				import test4 from 'test4/foo'
				import test5 from 'test5/foo'
				import absoluteIn from './absolute-in'
				import absoluteInStar from './absolute-in-star'
				import absoluteOut from './absolute-out'
				import absoluteOutStar from './absolute-out-star'
				export default {
					test0,
					test1,
					test2,
					test3,
					test4,
					test5,
					absoluteIn,
					absoluteInStar,
					absoluteOut,
					absoluteOutStar,
				}
			`,
			"/Users/user/project/baseurl_nested/tsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": "nested",
						"paths": {
							"test0": ["./test0-success.ts"],
							"test1/*": ["./test1-success.ts"],
							"test2/*": ["./test2-success/*"],
							"t*t3/foo": ["./test3-succ*s.ts"],
							"test4/*": ["./test4-first/*", "./test4-second/*"],
							"test5/*": ["./test5-first/*", "./test5-second/*"],
							"/virtual-in/test": ["./actual/test"],
							"/virtual-in-star/*": ["./actual/*"],
							"/virtual-out/test": ["/Users/user/project/baseurl_nested/nested/actual/test"],
							"/virtual-out-star/*": ["/Users/user/project/baseurl_nested/nested/actual/*"],
						}
					}
				}
			`,
			"/Users/user/project/baseurl_nested/nested/test0-success.ts": `
				export default 'test0-success'
			`,
			"/Users/user/project/baseurl_nested/nested/test1-success.ts": `
				export default 'test1-success'
			`,
			"/Users/user/project/baseurl_nested/nested/test2-success/foo.ts": `
				export default 'test2-success'
			`,
			"/Users/user/project/baseurl_nested/nested/test3-success.ts": `
				export default 'test3-success'
			`,
			"/Users/user/project/baseurl_nested/nested/test4-first/foo.ts": `
				export default 'test4-success'
			`,
			"/Users/user/project/baseurl_nested/nested/test5-second/foo.ts": `
				export default 'test5-success'
			`,
			"/Users/user/project/baseurl_nested/absolute-in.ts": `
				export {default} from '/virtual-in/test'
			`,
			"/Users/user/project/baseurl_nested/absolute-in-star.ts": `
				export {default} from '/virtual-in/test'
			`,
			"/Users/user/project/baseurl_nested/absolute-out.ts": `
				export {default} from '/virtual-out/test'
			`,
			"/Users/user/project/baseurl_nested/absolute-out-star.ts": `
				export {default} from '/virtual-out-star/test'
			`,
			"/Users/user/project/baseurl_nested/nested/actual/test.ts": `
				export default 'absolute-success'
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigPathsNoBaseURL(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.ts": `
				import simple from './simple'
				import extended from './extended'
				console.log(simple, extended)
			`,

			// Tests with "baseUrl": "."
			"/Users/user/project/simple/index.ts": `
				import test0 from 'test0'
				import test1 from 'test1/foo'
				import test2 from 'test2/foo'
				import test3 from 'test3/foo'
				import test4 from 'test4/foo'
				import test5 from 'test5/foo'
				import absolute from './absolute'
				export default {
					test0,
					test1,
					test2,
					test3,
					test4,
					test5,
					absolute,
				}
			`,
			"/Users/user/project/simple/tsconfig.json": `
				{
					"compilerOptions": {
						"paths": {
							"test0": ["./test0-success.ts"],
							"test1/*": ["./test1-success.ts"],
							"test2/*": ["./test2-success/*"],
							"t*t3/foo": ["./test3-succ*s.ts"],
							"test4/*": ["./test4-first/*", "./test4-second/*"],
							"test5/*": ["./test5-first/*", "./test5-second/*"],
							"/virtual/*": ["./actual/*"],
						}
					}
				}
			`,
			"/Users/user/project/simple/test0-success.ts": `
				export default 'test0-success'
			`,
			"/Users/user/project/simple/test1-success.ts": `
				export default 'test1-success'
			`,
			"/Users/user/project/simple/test2-success/foo.ts": `
				export default 'test2-success'
			`,
			"/Users/user/project/simple/test3-success.ts": `
				export default 'test3-success'
			`,
			"/Users/user/project/simple/test4-first/foo.ts": `
				export default 'test4-success'
			`,
			"/Users/user/project/simple/test5-second/foo.ts": `
				export default 'test5-success'
			`,
			"/Users/user/project/simple/absolute.ts": `
				export {default} from '/virtual/test'
			`,
			"/Users/user/project/simple/actual/test.ts": `
				export default 'absolute-success'
			`,

			// Tests with "baseUrl": "nested"
			"/Users/user/project/extended/index.ts": `
				import test0 from 'test0'
				import test1 from 'test1/foo'
				import test2 from 'test2/foo'
				import test3 from 'test3/foo'
				import test4 from 'test4/foo'
				import test5 from 'test5/foo'
				import absolute from './absolute'
				export default {
					test0,
					test1,
					test2,
					test3,
					test4,
					test5,
					absolute,
				}
			`,
			"/Users/user/project/extended/tsconfig.json": `
				{
					"extends": "./nested/tsconfig.json"
				}
			`,
			"/Users/user/project/extended/nested/tsconfig.json": `
				{
					"compilerOptions": {
						"paths": {
							"test0": ["./test0-success.ts"],
							"test1/*": ["./test1-success.ts"],
							"test2/*": ["./test2-success/*"],
							"t*t3/foo": ["./test3-succ*s.ts"],
							"test4/*": ["./test4-first/*", "./test4-second/*"],
							"test5/*": ["./test5-first/*", "./test5-second/*"],
							"/virtual/*": ["./actual/*"],
						}
					}
				}
			`,
			"/Users/user/project/extended/nested/test0-success.ts": `
				export default 'test0-success'
			`,
			"/Users/user/project/extended/nested/test1-success.ts": `
				export default 'test1-success'
			`,
			"/Users/user/project/extended/nested/test2-success/foo.ts": `
				export default 'test2-success'
			`,
			"/Users/user/project/extended/nested/test3-success.ts": `
				export default 'test3-success'
			`,
			"/Users/user/project/extended/nested/test4-first/foo.ts": `
				export default 'test4-success'
			`,
			"/Users/user/project/extended/nested/test5-second/foo.ts": `
				export default 'test5-success'
			`,
			"/Users/user/project/extended/absolute.ts": `
				export {default} from '/virtual/test'
			`,
			"/Users/user/project/extended/nested/actual/test.ts": `
				export default 'absolute-success'
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigBadPathsNoBaseURL(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.ts": `
				import "should-not-be-imported"
			`,
			"/Users/user/project/should-not-be-imported.ts": `
			`,
			"/Users/user/project/tsconfig.json": `
				{
					"compilerOptions": {
						"paths": {
							"test": [
								".",
								"..",
								"./good",
								".\\good",
								"../good",
								"..\\good",
								"/good",
								"\\good",
								"c:/good",
								"c:\\good",
								"C:/good",
								"C:\\good",

								"bad",
								"@bad/core",
								".*/bad",
								"..*/bad",
								"c*:\\bad",
								"c:*\\bad",
								"http://bad"
							]
						}
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/entry.ts: ERROR: Could not resolve "should-not-be-imported"
NOTE: Use the relative path "./should-not-be-imported" to reference the file "Users/user/project/should-not-be-imported.ts". Without the leading "./", the path "should-not-be-imported" is being interpreted as a package path instead.
Users/user/project/tsconfig.json: WARNING: Non-relative path "bad" is not allowed when "baseUrl" is not set (did you forget a leading "./"?)
Users/user/project/tsconfig.json: WARNING: Non-relative path "@bad/core" is not allowed when "baseUrl" is not set (did you forget a leading "./"?)
Users/user/project/tsconfig.json: WARNING: Non-relative path ".*/bad" is not allowed when "baseUrl" is not set (did you forget a leading "./"?)
Users/user/project/tsconfig.json: WARNING: Non-relative path "..*/bad" is not allowed when "baseUrl" is not set (did you forget a leading "./"?)
Users/user/project/tsconfig.json: WARNING: Non-relative path "c*:\\bad" is not allowed when "baseUrl" is not set (did you forget a leading "./"?)
Users/user/project/tsconfig.json: WARNING: Non-relative path "c:*\\bad" is not allowed when "baseUrl" is not set (did you forget a leading "./"?)
Users/user/project/tsconfig.json: WARNING: Non-relative path "http://bad" is not allowed when "baseUrl" is not set (did you forget a leading "./"?)
`,
	})
}

// https://github.com/evanw/esbuild/issues/913
func TestTsConfigPathsOverriddenBaseURL(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import test from '#/test'
				console.log(test)
			`,
			"/Users/user/project/src/test.ts": `
				export default 123
			`,
			"/Users/user/project/tsconfig.json": `
				{
					"extends": "./tsconfig.paths.json",
					"compilerOptions": {
						"baseUrl": "./src"
					}
				}
			`,
			"/Users/user/project/tsconfig.paths.json": `
				{
					"compilerOptions": {
						"paths": {
							"#/*": ["./*"]
						}
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigPathsOverriddenBaseURLDifferentDir(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import test from '#/test'
				console.log(test)
			`,
			"/Users/user/project/src/test.ts": `
				export default 123
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"extends": "../tsconfig.paths.json",
					"compilerOptions": {
						"baseUrl": "./"
					}
				}
			`,
			"/Users/user/project/tsconfig.paths.json": `
				{
					"compilerOptions": {
						"paths": {
							"#/*": ["./*"]
						}
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigPathsMissingBaseURL(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import test from '#/test'
				console.log(test)
			`,
			"/Users/user/project/src/test.ts": `
				export default 123
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"extends": "../tsconfig.paths.json",
					"compilerOptions": {
					}
				}
			`,
			"/Users/user/project/tsconfig.paths.json": `
				{
					"compilerOptions": {
						"paths": {
							"#/*": ["./*"]
						}
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/src/entry.ts: ERROR: Could not resolve "#/test"
NOTE: You can mark the path "#/test" as external to exclude it from the bundle, which will remove this error.
`,
	})
}

func TestTsConfigPathsTypeOnly(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.ts": `
				import { fib } from "fib";

				console.log(fib(10));
			`,
			"/Users/user/project/node_modules/fib/index.js": `
				export function fib(input) {
					if (input < 2) {
						return input;
					}
					return fib(input - 1) + fib(input - 2);
				}
			`,
			"/Users/user/project/fib-local.d.ts": `
				export function fib(input: number): number;
			`,
			"/Users/user/project/tsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": ".",
						"paths": {
							"fib": ["fib-local.d.ts"]
						}
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigJSX(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.tsx": `
				console.log(<><div/><div/></>)
			`,
			"/Users/user/project/tsconfig.json": `
				{
					"compilerOptions": {
						"jsxFactory": "R.c",
						"jsxFragmentFactory": "R.F"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.tsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigNestedJSX(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.ts": `
				import factory from './factory'
				import fragment from './fragment'
				import both from './both'
				console.log(factory, fragment, both)
			`,
			"/Users/user/project/factory/index.tsx": `
				export default <><div/><div/></>
			`,
			"/Users/user/project/factory/tsconfig.json": `
				{
					"compilerOptions": {
						"jsxFactory": "h"
					}
				}
			`,
			"/Users/user/project/fragment/index.tsx": `
				export default <><div/><div/></>
			`,
			"/Users/user/project/fragment/tsconfig.json": `
				{
					"compilerOptions": {
						"jsxFragmentFactory": "a.b"
					}
				}
			`,
			"/Users/user/project/both/index.tsx": `
				export default <><div/><div/></>
			`,
			"/Users/user/project/both/tsconfig.json": `
				{
					"compilerOptions": {
						"jsxFactory": "R.c",
						"jsxFragmentFactory": "R.F"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigReactJSX(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.tsx": `
				console.log(<><div/><div/></>)
			`,
			"/Users/user/project/tsconfig.json": `
				{
					"compilerOptions": {
						"jsx": "react-jsx",
						"jsxImportSource": "notreact"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.tsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
			ExternalSettings: config.ExternalSettings{
				PreResolve: config.ExternalMatchers{Exact: map[string]bool{
					"notreact/jsx-runtime": true,
				}},
			},
		},
	})
}

func TestTsConfigReactJSXDev(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.tsx": `
				console.log(<><div/><div/></>)
			`,
			"/Users/user/project/tsconfig.json": `
				{
					"compilerOptions": {
						"jsx": "react-jsxdev"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.tsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
			ExternalSettings: config.ExternalSettings{
				PreResolve: config.ExternalMatchers{Exact: map[string]bool{
					"react/jsx-dev-runtime": true,
				}},
			},
		},
	})
}

func TestTsConfigReactJSXWithDevInMainConfig(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.tsx": `
				console.log(<><div/><div/></>)
			`,
			"/Users/user/project/tsconfig.json": `
				{
					"compilerOptions": {
						"jsx": "react-jsx"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.tsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
			JSX: config.JSXOptions{
				Development: true,
			},
			ExternalSettings: config.ExternalSettings{
				PreResolve: config.ExternalMatchers{Exact: map[string]bool{
					"react/jsx-dev-runtime": true,
				}},
			},
		},
	})
}

func TestTsconfigJsonBaseUrl(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.js": `
				import fn from 'lib/util'
				console.log(fn())
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": "."
					}
				}
			`,
			"/Users/user/project/src/lib/util.js": `
				module.exports = function() {
					return 123
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.js"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestJsconfigJsonBaseUrl(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.js": `
				import fn from 'lib/util'
				console.log(fn())
			`,
			"/Users/user/project/src/jsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": "."
					}
				}
			`,
			"/Users/user/project/src/lib/util.js": `
				module.exports = function() {
					return 123
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.js"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigJsonAbsoluteBaseUrl(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.js": `
				import fn from 'lib/util'
				console.log(fn())
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": "/Users/user/project/src"
					}
				}
			`,
			"/Users/user/project/src/lib/util.js": `
				module.exports = function() {
					return 123
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.js"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigJsonCommentAllowed(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.js": `
				import fn from 'lib/util'
				console.log(fn())
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					// Single-line comment
					"compilerOptions": {
						"baseUrl": "."
					}
				}
			`,
			"/Users/user/project/src/lib/util.js": `
				module.exports = function() {
					return 123
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.js"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigJsonTrailingCommaAllowed(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.js": `
				import fn from 'lib/util'
				console.log(fn())
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": ".",
					},
				}
			`,
			"/Users/user/project/src/lib/util.js": `
				module.exports = function() {
					return 123
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.js"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigJsonExtends(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/entry.jsx": `
				console.log(<div/>, <></>)
			`,
			"/tsconfig.json": `
				{
					"extends": "./base",
					"compilerOptions": {
						"jsxFragmentFactory": "derivedFragment"
					}
				}
			`,
			"/base.json": `
				{
					"compilerOptions": {
						"jsxFactory": "baseFactory",
						"jsxFragmentFactory": "baseFragment"
					}
				}
			`,
		},
		entryPaths: []string{"/entry.jsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/out.js",
		},
	})
}

func TestTsconfigJsonExtendsAbsolute(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/entry.jsx": `
				console.log(<div/>, <></>)
			`,
			"/Users/user/project/tsconfig.json": `
				{
					"extends": "/Users/user/project/base.json",
					"compilerOptions": {
						"jsxFragmentFactory": "derivedFragment"
					}
				}
			`,
			"/Users/user/project/base.json": `
				{
					"compilerOptions": {
						"jsxFactory": "baseFactory",
						"jsxFragmentFactory": "baseFragment"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/entry.jsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/out.js",
		},
	})
}

func TestTsconfigJsonExtendsThreeLevels(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.jsx": `
				import "test/import.js"
				console.log(<div/>, <></>)
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"extends": "./path1/base",
					"compilerOptions": {
						"jsxFragmentFactory": "derivedFragment"
					}
				}
			`,
			"/Users/user/project/src/path1/base.json": `
				{
					"extends": "../path2/base2"
				}
			`,
			"/Users/user/project/src/path2/base2.json": `
				{
					"compilerOptions": {
						"baseUrl": ".",
						"paths": {
							"test/*": ["./works/*"]
						},
						"jsxFactory": "baseFactory",
						"jsxFragmentFactory": "baseFragment"
					}
				}
			`,
			"/Users/user/project/src/path2/works/import.js": `
				console.log('works')
			`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.jsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/out.js",
		},
	})
}

func TestTsconfigJsonExtendsLoop(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/entry.js": `
				console.log(123)
			`,
			"/tsconfig.json": `
				{
					"extends": "./base.json"
				}
			`,
			"/base.json": `
				{
					"extends": "./tsconfig"
				}
			`,
		},
		entryPaths: []string{"/entry.js"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/out.js",
		},
		expectedScanLog: `base.json: WARNING: Base config file "./tsconfig" forms cycle
`,
	})
}

func TestTsconfigJsonExtendsPackage(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.jsx": `
				console.log(<div/>)
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"extends": "@package/foo/tsconfig.json"
				}
			`,
			"/Users/user/project/node_modules/@package/foo/tsconfig.json": `
				{
					"compilerOptions": {
						"jsxFactory": "worked"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.jsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigJsonOverrideMissing(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.ts": `
				import 'foo'
			`,
			"/Users/user/project/src/foo-bad.ts": `
				console.log('bad')
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": ".",
						"paths": {
							"foo": ["./foo-bad.ts"]
						}
					}
				}
			`,
			"/Users/user/project/other/foo-good.ts": `
				console.log('good')
			`,
			"/Users/user/project/other/config-for-ts.json": `
				{
					"compilerOptions": {
						"baseUrl": ".",
						"paths": {
							"foo": ["./foo-good.ts"]
						}
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.ts"},
		options: config.Options{
			Mode:             config.ModeBundle,
			AbsOutputFile:    "/Users/user/project/out.js",
			TsConfigOverride: "/Users/user/project/other/config-for-ts.json",
		},
	})
}

func TestTsconfigJsonOverrideNodeModules(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.ts": `
				import 'foo'
			`,
			"/Users/user/project/src/node_modules/foo/index.js": `
				console.log('default')
			`,
			"/Users/user/project/src/foo-bad.ts": `
				console.log('bad')
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"compilerOptions": {
						"baseUrl": ".",
						"paths": {
							"foo": ["./foo-bad.ts"]
						}
					}
				}
			`,
			"/Users/user/project/other/foo-good.ts": `
				console.log('good')
			`,
			"/Users/user/project/other/config-for-ts.json": `
				{
					"compilerOptions": {
						"baseUrl": ".",
						"paths": {
							"foo": ["./foo-good.ts"]
						}
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.ts"},
		options: config.Options{
			Mode:             config.ModeBundle,
			AbsOutputFile:    "/Users/user/project/out.js",
			TsConfigOverride: "/Users/user/project/other/config-for-ts.json",
		},
	})
}

func TestTsconfigJsonOverrideInvalid(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/entry.ts": ``,
		},
		entryPaths: []string{"/entry.ts"},
		options: config.Options{
			Mode:             config.ModeBundle,
			AbsOutputFile:    "/out.js",
			TsConfigOverride: "/this/file/doesn't/exist/tsconfig.json",
		},
		expectedScanLog: `ERROR: Cannot find tsconfig file "this/file/doesn't/exist/tsconfig.json"
`,
	})
}

func TestTsconfigJsonNodeModulesImplicitFile(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.tsx": `
				console.log(<div/>)
			`,
			"/Users/user/project/src/tsconfig.json": `
				{
					"extends": "foo"
				}
			`,
			"/Users/user/project/src/node_modules/foo/tsconfig.json": `
				{
					"compilerOptions": {
						"jsx": "react",
						"jsxFactory": "worked"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.tsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigJsonInsideNodeModules(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/app/entry.tsx": `
				import 'foo'
			`,
			"/Users/user/project/src/node_modules/foo/index.tsx": `
				console.log(<div/>)
			`,
			"/Users/user/project/src/node_modules/foo/tsconfig.json": `
				{
					"compilerOptions": {
						"jsxFactory": "TEST_FAILED"
					}
				}
			`,
		},
		entryPaths: []string{"/Users/user/project/src/app/entry.tsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigWarningsInsideNodeModules(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.tsx": `
				import "./foo"
				import "bar"
			`,

			"/Users/user/project/src/foo/tsconfig.json": `{ "extends": "extends for foo" }`,
			"/Users/user/project/src/foo/index.js":      ``,

			"/Users/user/project/src/node_modules/bar/tsconfig.json": `{ "extends": "extends for bar" }`,
			"/Users/user/project/src/node_modules/bar/index.js":      ``,
		},
		entryPaths: []string{"/Users/user/project/src/entry.tsx"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/src/foo/tsconfig.json: WARNING: Cannot find base config file "extends for foo"
`,
	})
}

func TestTsconfigRemoveUnusedImports(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import {x, y} from "./foo"
				console.log(1 as x)
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"importsNotUsedAsValues": "remove"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigPreserveUnusedImports(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import {x, y} from "./foo"
				console.log(1 as x)
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"importsNotUsedAsValues": "preserve"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
			ExternalSettings: config.ExternalSettings{
				PostResolve: config.ExternalMatchers{Exact: map[string]bool{
					"/Users/user/project/src/foo": true,
				}},
			},
		},
	})
}

func TestTsconfigImportsNotUsedAsValuesPreserve(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import {x, y} from "./foo"
				import z from "./foo"
				import * as ns from "./foo"
				console.log(1 as x, 2 as z, 3 as ns.y)
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"importsNotUsedAsValues": "preserve"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeConvertFormat,
			OutputFormat:  config.FormatESModule,
			AbsOutputFile: "/Users/user/project/out.js",
			ExternalSettings: config.ExternalSettings{
				PostResolve: config.ExternalMatchers{Exact: map[string]bool{
					"/Users/user/project/src/foo": true,
				}},
			},
		},
	})
}

func TestTsconfigPreserveValueImports(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import {} from "a"
				import {b1} from "b"
				import {c1, type c2} from "c"
				import {d1, d2, type d3} from "d"
				import {type e1, type e2} from "e"
				import f1, {} from "f"
				import g1, {g2} from "g"
				import h1, {type h2} from "h"
				import * as i1 from "i"
				import "j"
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"preserveValueImports": true
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeConvertFormat,
			OutputFormat:  config.FormatESModule,
			AbsOutputFile: "/Users/user/project/out.js",
			ExternalSettings: config.ExternalSettings{
				PostResolve: config.ExternalMatchers{Exact: map[string]bool{
					"/Users/user/project/src/foo": true,
				}},
			},
		},
	})
}

func TestTsconfigPreserveValueImportsAndImportsNotUsedAsValuesPreserve(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import {} from "a"
				import {b1} from "b"
				import {c1, type c2} from "c"
				import {d1, d2, type d3} from "d"
				import {type e1, type e2} from "e"
				import f1, {} from "f"
				import g1, {g2} from "g"
				import h1, {type h2} from "h"
				import * as i1 from "i"
				import "j"
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"importsNotUsedAsValues": "preserve",
					"preserveValueImports": true
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeConvertFormat,
			OutputFormat:  config.FormatESModule,
			AbsOutputFile: "/Users/user/project/out.js",
			ExternalSettings: config.ExternalSettings{
				PostResolve: config.ExternalMatchers{Exact: map[string]bool{
					"/Users/user/project/src/foo": true,
				}},
			},
		},
	})
}

func TestTsconfigTarget(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import "./es2018"
				import "./es2019"
				import "./es2020"
				import "./es4"
			`,
			"/Users/user/project/src/es2018/index.ts": `
				let x = { ...y }   // es2018 syntax
				try { y } catch {} // es2019 syntax
				x?.y()             // es2020 syntax
			`,
			"/Users/user/project/src/es2019/index.ts": `
				let x = { ...y }   // es2018 syntax
				try { y } catch {} // es2019 syntax
				x?.y()             // es2020 syntax
			`,
			"/Users/user/project/src/es2020/index.ts": `
				let x = { ...y }   // es2018 syntax
				try { y } catch {} // es2019 syntax
				x?.y()             // es2020 syntax
			`,
			"/Users/user/project/src/es4/index.ts": `
			`,
			"/Users/user/project/src/es2018/tsconfig.json": `{
				"compilerOptions": {
					"target": "ES2018"
				}
			}`,
			"/Users/user/project/src/es2019/tsconfig.json": `{
				"compilerOptions": {
					"target": "es2019"
				}
			}`,
			"/Users/user/project/src/es2020/tsconfig.json": `{
				"compilerOptions": {
					"target": "ESNext"
				}
			}`,
			"/Users/user/project/src/es4/tsconfig.json": `{
				"compilerOptions": {
					"target": "ES4"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
			TargetFromAPI: config.TargetWasUnconfigured,
		},
		expectedScanLog: `Users/user/project/src/es4/tsconfig.json: WARNING: Unrecognized target environment "ES4"
`,
	})
}

func TestTsconfigTargetError(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				x = 123n
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"target": "ES2019"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
			TargetFromAPI: config.TargetWasUnconfigured,
		},
		expectedScanLog: `Users/user/project/src/entry.ts: ERROR: Big integer literals are not available in the configured target environment ("ES2019")
Users/user/project/src/tsconfig.json: NOTE: The target environment was set to "ES2019" here:
`,
	})
}

func TestTsconfigTargetIgnored(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				x = 123n
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"target": "ES2019"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
			TargetFromAPI: config.TargetWasConfigured,
		},
	})
}

func TestTsconfigUseDefineForClassFieldsES2020(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				Foo = class {
					useDefine = false
				}
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"target": "ES2020"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigUseDefineForClassFieldsESNext(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				Foo = class {
					useDefine = true
				}
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"target": "ESNext"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsconfigUnrecognizedTargetWarning(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import "./a"
				import "b"
			`,
			"/Users/user/project/src/a/index.ts": ``,
			"/Users/user/project/src/a/tsconfig.json": `{
				"compilerOptions": {
					"target": "es3"
				}
			}`,
			"/Users/user/project/src/node_modules/b/index.ts": ``,
			"/Users/user/project/src/node_modules/b/tsconfig.json": `{
				"compilerOptions": {
					"target": "es3"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/src/a/tsconfig.json: WARNING: Unrecognized target environment "es3"
`,
	})
}

// This should point to "tsconfig.json" as the source of the
// problem because it was not overridden with configuration
func TestTsconfigTargetWarning(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				await 0
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"target": "es6"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:                  config.ModeBundle,
			AbsOutputFile:         "/Users/user/project/out.js",
			UnsupportedJSFeatures: es(6),
			TargetFromAPI:         config.TargetWasUnconfigured,
		},
		expectedScanLog: `Users/user/project/src/entry.ts: ERROR: Top-level await is not available in the configured target environment ("es6")
Users/user/project/src/tsconfig.json: NOTE: The target environment was set to "es6" here:
`,
	})
}

// This should not point to "tsconfig.json" as the source of the
// problem because it was overridden with explicit configuration
func TestTsconfigOverriddenTargetWarning(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				await 0
			`,
			"/Users/user/project/src/tsconfig.json": `{
				"compilerOptions": {
					"target": "es6"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:                  config.ModeBundle,
			AbsOutputFile:         "/Users/user/project/out.js",
			UnsupportedJSFeatures: es(2020),
			TargetFromAPI:         config.TargetWasConfigured,
			OriginalTargetEnv:     "es2020",
		},
		expectedScanLog: `Users/user/project/src/entry.ts: ERROR: Top-level await is not available in the configured target environment (es2020)
`,
	})
}

func TestTsConfigNoBaseURLExtendsPaths(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import { foo } from "foo"
				console.log(foo)
			`,
			"/Users/user/project/lib/foo.ts": `
				export let foo = 123
			`,
			"/Users/user/project/tsconfig.json": `{
				"extends": "./base/defaults"
			}`,
			"/Users/user/project/base/defaults.json": `{
				"compilerOptions": {
					"paths": {
						"*": ["lib/*"]
					}
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/base/defaults.json: WARNING: Non-relative path "lib/*" is not allowed when "baseUrl" is not set (did you forget a leading "./"?)
Users/user/project/src/entry.ts: ERROR: Could not resolve "foo"
NOTE: You can mark the path "foo" as external to exclude it from the bundle, which will remove this error.
`,
	})
}

func TestTsConfigBaseURLExtendsPaths(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import { foo } from "foo"
				console.log(foo)
			`,
			"/Users/user/project/lib/foo.ts": `
				export let foo = 123
			`,
			"/Users/user/project/tsconfig.json": `{
				"extends": "./base/defaults",
				"compilerOptions": {
					"baseUrl": "."
				}
			}`,
			"/Users/user/project/base/defaults.json": `{
				"compilerOptions": {
					"paths": {
						"*": ["lib/*"]
					}
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigPathsExtendsBaseURL(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import { foo } from "foo"
				console.log(foo)
			`,
			"/Users/user/project/base/test/lib/foo.ts": `
				export let foo = 123
			`,
			"/Users/user/project/tsconfig.json": `{
				"extends": "./base/defaults",
				"compilerOptions": {
					"paths": {
						"*": ["lib/*"]
					}
				}
			}`,
			"/Users/user/project/base/defaults.json": `{
				"compilerOptions": {
					"baseUrl": "test"
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigModuleSuffixesInsert(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import "./foo"
				import "./bar.js"
				import "./baz.a.js"
			`,

			"/Users/user/project/src/foo.a.ts": `console.log('foo.a')`,
			"/Users/user/project/src/foo.b.ts": `console.log('foo.b')`,
			"/Users/user/project/src/foo.ts":   `console.log('foo')`,

			"/Users/user/project/src/bar.a.ts": `console.log('bar.a')`,
			"/Users/user/project/src/bar.b.ts": `console.log('bar.b')`,
			"/Users/user/project/src/bar.ts":   `console.log('bar')`,

			"/Users/user/project/src/baz.a.ts": `console.log('baz.a')`,
			"/Users/user/project/src/baz.b.ts": `console.log('baz.b')`,
			"/Users/user/project/src/baz.ts":   `console.log('baz')`,

			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"moduleSuffixes": [".a", ".b", ""]
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigModuleSuffixesNoInsert(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import "./foo.b"
				import "./bar.js"
				import "./baz.b.js"
			`,

			"/Users/user/project/src/foo.a.ts": `console.log('foo.a')`,
			"/Users/user/project/src/foo.b.ts": `console.log('foo.b')`,
			"/Users/user/project/src/foo.ts":   `console.log('foo')`,

			"/Users/user/project/src/bar.ts": `console.log('bar')`,

			"/Users/user/project/src/baz.a.ts": `console.log('baz.a')`,
			"/Users/user/project/src/baz.b.ts": `console.log('baz.b')`,
			"/Users/user/project/src/baz.ts":   `console.log('baz')`,

			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"moduleSuffixes": [".a", ".b", ""]
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigModuleSuffixesNoEmpty(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				import "./foo.js"
				import "./bar"
			`,

			"/Users/user/project/src/foo.b.ts": `console.log('foo.b')`,
			"/Users/user/project/src/bar.ts":   `console.log('bar')`,

			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"moduleSuffixes": [".a", ".b"]
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/src/entry.ts: ERROR: Could not resolve "./bar"
`,
	})
}

func TestTsConfigWithStatementAlwaysStrictFalse(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				with (x) y
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"alwaysStrict": false
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigWithStatementAlwaysStrictTrue(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				with (x) y
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"alwaysStrict": true
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/src/entry.ts: ERROR: With statements cannot be used in strict mode
Users/user/project/tsconfig.json: NOTE: TypeScript's "alwaysStrict" setting was enabled here:
`,
	})
}

func TestTsConfigWithStatementStrictFalse(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				with (x) y
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"strict": false
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigWithStatementStrictTrue(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				with (x) y
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"strict": true
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/src/entry.ts: ERROR: With statements cannot be used in strict mode
Users/user/project/tsconfig.json: NOTE: TypeScript's "strict" setting was enabled here:
`,
	})
}

func TestTsConfigWithStatementStrictFalseAlwaysStrictTrue(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				with (x) y
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"strict": false,
					"alwaysStrict": true
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
		expectedScanLog: `Users/user/project/src/entry.ts: ERROR: With statements cannot be used in strict mode
Users/user/project/tsconfig.json: NOTE: TypeScript's "alwaysStrict" setting was enabled here:
`,
	})
}

func TestTsConfigWithStatementStrictTrueAlwaysStrictFalse(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/entry.ts": `
				with (x) y
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"strict": true,
					"alwaysStrict": false
				}
			}`,
		},
		entryPaths: []string{"/Users/user/project/src/entry.ts"},
		options: config.Options{
			Mode:          config.ModeBundle,
			AbsOutputFile: "/Users/user/project/out.js",
		},
	})
}

func TestTsConfigAlwaysStrictTrueEmitDirectivePassThrough(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/implicit.ts": `
				console.log('this file should start with "use strict"')
			`,
			"/Users/user/project/src/explicit.ts": `
				'use strict'
				console.log('this file should start with "use strict"')
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"alwaysStrict": true
				}
			}`,
		},
		entryPaths: []string{
			"/Users/user/project/src/implicit.ts",
			"/Users/user/project/src/explicit.ts",
		},
		options: config.Options{
			Mode:         config.ModePassThrough,
			AbsOutputDir: "/Users/user/project/out",
		},
	})
}

func TestTsConfigAlwaysStrictTrueEmitDirectiveFormat(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/implicit.ts": `
				console.log('this file should start with "use strict"')
			`,
			"/Users/user/project/src/explicit.ts": `
				'use strict'
				console.log('this file should start with "use strict"')
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"alwaysStrict": true
				}
			}`,
		},
		entryPaths: []string{
			"/Users/user/project/src/implicit.ts",
			"/Users/user/project/src/explicit.ts",
		},
		options: config.Options{
			Mode:         config.ModeConvertFormat,
			AbsOutputDir: "/Users/user/project/out",
		},
	})
}

func TestTsConfigAlwaysStrictTrueEmitDirectiveBundleIIFE(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/implicit.ts": `
				console.log('this file should start with "use strict"')
			`,
			"/Users/user/project/src/explicit.ts": `
				'use strict'
				console.log('this file should start with "use strict"')
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"alwaysStrict": true
				}
			}`,
		},
		entryPaths: []string{
			"/Users/user/project/src/implicit.ts",
			"/Users/user/project/src/explicit.ts",
		},
		options: config.Options{
			Mode:         config.ModeBundle,
			AbsOutputDir: "/Users/user/project/out",
			OutputFormat: config.FormatIIFE,
		},
	})
}

func TestTsConfigAlwaysStrictTrueEmitDirectiveBundleCJS(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/implicit.ts": `
				console.log('this file should start with "use strict"')
			`,
			"/Users/user/project/src/explicit.ts": `
				'use strict'
				console.log('this file should start with "use strict"')
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"alwaysStrict": true
				}
			}`,
		},
		entryPaths: []string{
			"/Users/user/project/src/implicit.ts",
			"/Users/user/project/src/explicit.ts",
		},
		options: config.Options{
			Mode:         config.ModeBundle,
			AbsOutputDir: "/Users/user/project/out",
			OutputFormat: config.FormatCommonJS,
		},
	})
}

func TestTsConfigAlwaysStrictTrueEmitDirectiveBundleESM(t *testing.T) {
	tsconfig_suite.expectBundled(t, bundled{
		files: map[string]string{
			"/Users/user/project/src/implicit.ts": `
				console.log('this file should not start with "use strict"')
			`,
			"/Users/user/project/src/explicit.ts": `
				'use strict'
				console.log('this file should not start with "use strict"')
			`,
			"/Users/user/project/tsconfig.json": `{
				"compilerOptions": {
					"alwaysStrict": true
				}
			}`,
		},
		entryPaths: []string{
			"/Users/user/project/src/implicit.ts",
			"/Users/user/project/src/explicit.ts",
		},
		options: config.Options{
			Mode:         config.ModeBundle,
			AbsOutputDir: "/Users/user/project/out",
			OutputFormat: config.FormatESModule,
		},
	})
}