build: remove semver dependency (#587)

Co-authored-by: Rebecca Stevens <[email protected]>

package.json

@@ -53,7 +53,6 @@
 		"@phenomnomnominal/tsquery": "^6.1.3",
 		"@release-it/conventional-changelog": "^9.0.0",
 		"@types/eslint": "^8.56.5",
-		"@types/semver": "^7.5.8",
 		"@typescript-eslint/eslint-plugin": "^7.3.1",
 		"@typescript-eslint/parser": "^8.0.0",
 		"@typescript/vfs": "^1.5.0",
@@ -82,7 +81,6 @@
 		"prettier-plugin-curly": "^0.3.0",
 		"prettier-plugin-packagejson": "^2.4.7",
 		"release-it": "^17.0.1",
-		"semver": "^7.6.2",
 		"sentences-per-line": "^0.2.1",
 		"should-semantic-release": "^0.3.0",
 		"tsup": "^8.0.2",

src/types/utilities.test.ts

@@ -1,8 +1,8 @@
-import semver from "semver";
 import ts from "typescript";
 import { describe, expect, it } from "vitest";
 
 import { createSourceFileAndTypeChecker } from "../test/utils";
+import { isTsVersionAtLeast } from "../utils";
 import {
 	isFalsyType,
 	isPropertyReadonlyInType,
@@ -133,7 +133,7 @@ describe("symbolHasReadonlyDeclaration", () => {
 		expect(symbolHasReadonlyDeclaration(symbol, typeChecker)).toBe(expected);
 	});
 
-	if (semver.gte(ts.version, "5.0.0")) {
+	if (isTsVersionAtLeast(5, 0)) {
 		it("returns true when the symbol belongs to a property of a nested object literal directly passed into a function that declares the parameter with a const type parameter", () => {
 			const { sourceFile, typeChecker } = createSourceFileAndTypeChecker(`
 			declare const fn: <const A>(param: A) => unknown;

src/types/utilities.ts

@@ -1,7 +1,6 @@
 // Code largely based on https://github.com/ajafff/tsutils
 // Original license: https://github.com/ajafff/tsutils/blob/26b195358ec36d59f00333115aa3ffd9611ca78b/LICENSE
 
-import semver from "semver";
 import ts from "typescript";
 
 import {
@@ -16,6 +15,7 @@ import {
 	isInConstContext,
 } from "../nodes/utilities";
 import { isNumericPropertyName } from "../syntax";
+import { isTsVersionAtLeast } from "../utils";
 import { getPropertyOfType } from "./getters";
 import {
 	isFalseLiteralType,
@@ -420,14 +420,14 @@ export function unionTypeParts(type: ts.Type): ts.Type[] {
  * ```
  */
 export function typeIsLiteral(type: ts.Type): type is ts.LiteralType {
-	if (semver.lt(ts.version, "5.0.0")) {
+	if (isTsVersionAtLeast(5, 0)) {
+		return type.isLiteral();
+	} else {
 		return isTypeFlagSet(
 			type,
 			ts.TypeFlags.StringLiteral |
 				ts.TypeFlags.NumberLiteral |
 				ts.TypeFlags.BigIntLiteral,
 		);
-	} else {
-		return type.isLiteral();
 	}
 }