fix: error resistence for other errors

alexander-akait · alexander-akait · commit 4d544554e1d8 · 2023-05-02T12:15:52.000+03:00
diff --git a/lib/css/CssParser.js b/lib/css/CssParser.js
@@ -260,10 +260,16 @@ class CssParser extends Parser {
 		const parseExports = (input, pos) => {
 			pos = walkCssTokens.eatWhitespaceAndComments(input, pos);
 			const cc = input.charCodeAt(pos);
-			if (cc !== CC_LEFT_CURLY)
-				throw new Error(
-					`Unexpected ${input[pos]} at ${pos} during parsing of ':export' (expected '{')`
+			if (cc !== CC_LEFT_CURLY) {
+				this._emitWarning(
+					state,
+					`Unexpected '${input[pos]}' at ${pos} during parsing of ':export' (expected '{')`,
+					locConverter,
+					pos,
+					pos
 				);
+				return pos;
+			}
 			pos++;
 			pos = walkCssTokens.eatWhitespaceAndComments(input, pos);
 			for (;;) {
@@ -275,9 +281,14 @@ class CssParser extends Parser {
 				[pos, name] = eatText(input, pos, eatExportName);
 				if (pos === input.length) return pos;
 				if (input.charCodeAt(pos) !== CC_COLON) {
-					throw new Error(
-						`Unexpected ${input[pos]} at ${pos} during parsing of export name in ':export' (expected ':')`
+					this._emitWarning(
+						state,
+						`Unexpected '${input[pos]}' at ${pos} during parsing of export name in ':export' (expected ':')`,
+						locConverter,
+						start,
+						pos
 					);
+					return pos;
 				}
 				pos++;
 				if (pos === input.length) return pos;
@@ -293,9 +304,14 @@ class CssParser extends Parser {
 					pos = walkCssTokens.eatWhitespaceAndComments(input, pos);
 					if (pos === input.length) return pos;
 				} else if (cc !== CC_RIGHT_CURLY) {
-					throw new Error(
-						`Unexpected ${input[pos]} at ${pos} during parsing of export value in ':export' (expected ';' or '}')`
+					this._emitWarning(
+						state,
+						`Unexpected '${input[pos]}' at ${pos} during parsing of export value in ':export' (expected ';' or '}')`,
+						locConverter,
+						start,
+						pos
 					);
+					return pos;
 				}
 				const dep = new CssExportDependency(name, value);
 				const { line: sl, column: sc } = locConverter.get(start);
@@ -526,23 +542,41 @@ class CssParser extends Parser {
 					pos = newPos;
 					if (pos === input.length) return pos;
 					if (input.charCodeAt(pos) !== CC_LEFT_CURLY) {
-						throw new Error(
-							`Unexpected ${input[pos]} at ${pos} during parsing of @media or @supports (expected '{')`
+						this._emitWarning(
+							state,
+							`Unexpected ${input[pos]} at ${pos} during parsing of @media or @supports (expected '{')`,
+							locConverter,
+							start,
+							pos
 						);
+						return pos;
 					}
 					return pos + 1;
 				}
 				return end;
 			},
 			semicolon: (input, start, end) => {
 				switch (mode) {
-					case CSS_MODE_AT_IMPORT_EXPECT_URL:
-						throw new Error(`Expected URL for @import at ${start}`);
+					case CSS_MODE_AT_IMPORT_EXPECT_URL: {
+						this._emitWarning(
+							state,
+							`Expected URL for @import at ${start}`,
+							locConverter,
+							start,
+							end
+						);
+						return end;
+					}
 					case CSS_MODE_AT_IMPORT_EXPECT_LAYER_OR_SUPPORTS_OR_MEDIA: {
 						if (modeData.url === undefined) {
-							throw new Error(
-								`Expected URL for @import at ${modeData.atRuleStart}`
+							this._emitWarning(
+								state,
+								`Expected URL for @import at ${modeData.atRuleStart}`,
+								locConverter,
+								modeData.atRuleStart,
+								modeData.lastPos
 							);
+							return end;
 						}
 						const semicolonPos = end;
 						const { line: sl, column: sc } = locConverter.get(
