chore: fix logic

Author: bluwy

packages/vite-plugin-svelte/src/index.js

@@ -66,12 +66,12 @@ export function svelte(inlineOptions) {
 				return extraViteConfig;
 			},
 
-			configEnvironment(_, config, opts) {
-				ensureConfigEnvironmentMainFields(config, opts);
+			configEnvironment(name, config, opts) {
+				ensureConfigEnvironmentMainFields(name, config, opts);
 				// @ts-expect-error the function above should make `resolve.mainFields` non-nullable
 				config.resolve.mainFields.unshift('svelte');
 
-				ensureConfigEnvironmentConditions(config, opts);
+				ensureConfigEnvironmentConditions(name, config, opts);
 				// @ts-expect-error the function above should make `resolve.conditions` non-nullable
 				config.resolve.conditions.push('svelte');
 			},

packages/vite-plugin-svelte/src/utils/options.js

@@ -605,13 +605,14 @@ export function patchResolvedViteConfig(viteConfig, options) {
 
 /**
  * Mutates `config` to ensure `resolve.mainFields` is set. If unset, it emulates Vite's default fallback.
+ * @param {string} name
  * @param {import('vite').EnvironmentOptions} config
  * @param {{ isSsrTargetWebworker?: boolean }} opts
  */
-export function ensureConfigEnvironmentMainFields(config, opts) {
+export function ensureConfigEnvironmentMainFields(name, config, opts) {
 	config.resolve ??= {};
 	if (config.resolve.mainFields == null) {
-		if (config.consumer === 'client' || opts.isSsrTargetWebworker) {
+		if (config.consumer === 'client' || name === 'client' || opts.isSsrTargetWebworker) {
 			config.resolve.mainFields = [...defaultClientMainFields];
 		} else {
 			config.resolve.mainFields = [...defaultServerMainFields];
@@ -622,13 +623,14 @@ export function ensureConfigEnvironmentMainFields(config, opts) {
 
 /**
  * Mutates `config` to ensure `resolve.conditions` is set. If unset, it emulates Vite's default fallback.
+ * @param {string} name
  * @param {import('vite').EnvironmentOptions} config
  * @param {{ isSsrTargetWebworker?: boolean }} opts
  */
-export function ensureConfigEnvironmentConditions(config, opts) {
+export function ensureConfigEnvironmentConditions(name, config, opts) {
 	config.resolve ??= {};
 	if (config.resolve.conditions == null) {
-		if (config.consumer === 'client' || opts.isSsrTargetWebworker) {
+		if (config.consumer === 'client' || name === 'client' || opts.isSsrTargetWebworker) {
 			config.resolve.conditions = [...defaultClientConditions];
 		} else {
 			config.resolve.conditions = [...defaultServerConditions];