fix: sanitizing remappings

src/utils.ts

@@ -56,7 +56,7 @@ export async function getRemappingsFromFile(remappingsPath: string): Promise<str
     .split('\n')
     .map((line) => line.trim())
     .filter((line) => line.length)
-    .map((line) => (line.slice(-1) === '/' ? line : line + '/'));
+    .map((line) => sanitizeRemapping(line));
 }
 
 export async function getRemappingsFromConfig(foundryConfigPath: string): Promise<string[]> {
@@ -68,12 +68,25 @@ export async function getRemappingsFromConfig(foundryConfigPath: string): Promis
       .groups!.remappings.split(',')
       .map((line) => line.trim())
       .map((line) => line.replace(/["']/g, ''))
-      .filter((line) => line.length);
+      .filter((line) => line.length)
+      .map((line) => sanitizeRemapping(line));
   } else {
     return [];
   }
 }
 
+export function sanitizeRemapping(line: string): string {
+  // Make sure the key and the value both either have or don't have a trailing slash
+  const [key, value] = line.split('=');
+  const slashNeeded = key.endsWith('/');
+
+  if (slashNeeded) {
+    return value.endsWith('/') ? line : `${line}/`;
+  } else {
+    return value.endsWith('/') ? line.slice(0, -1) : line;
+  }
+}
+
 export function parseNodeNatspec(node: NodeToProcess): Natspec {
   if (!node.documentation) {
     return { tags: [], params: [], returns: [] };

test/utils.test.ts

@@ -84,12 +84,17 @@ describe('Utils', () => {
       );
 
       remappings.set(
-        ['ds-test/=lib/ds-test/src'], // Expected value
-        [`remappings = [ 'ds-test/=lib/ds-test/src' ]`] // Remappings strings that when parsed should return the expected value
+        ['ds-test/=lib/ds-test/src/'], // Expected value
+        [`remappings = [ 'ds-test/=lib/ds-test/src/' ]`] // Remappings strings that when parsed should return the expected value
       );
 
       remappings.set(
-        ['ds-test/=node_modules/ds-test/src', 'forge-std/=node_modules/forge-std/src'], // Expected value
+        ['ds-test=lib/ds-test/src'], // Expected value
+        [`remappings = [ 'ds-test=lib/ds-test/src' ]`] // Remappings strings that when parsed should return the expected value
+      );
+
+      remappings.set(
+        ['ds-test/=node_modules/ds-test/src/', 'forge-std/=node_modules/forge-std/src/'], // Expected value
         [
           // Remappings strings that when parsed should return the expected value
           `remappings = [ 'ds-test/=node_modules/ds-test/src', 'forge-std/=node_modules/forge-std/src' ]`,
@@ -134,6 +139,27 @@ describe('Utils', () => {
     });
   });
 
+  describe('sanitizeRemapping', () => {
+    const key = 'ds-test';
+    const value = 'node_modules/ds-test/src';
+
+    it('should add a missing trailing slash', async () => {
+      expect(utils.sanitizeRemapping(`${key}/=${value}`)).toEqual(`${key}/=${value}/`);
+    });
+
+    it('should remove an extra trailing slash', async () => {
+      expect(utils.sanitizeRemapping(`${key}=${value}/`)).toEqual(`${key}=${value}`);
+    });
+
+    it('should not change the line if the trailing slash is correctly placed', async () => {
+      expect(utils.sanitizeRemapping(`${key}/=${value}/`)).toEqual(`${key}/=${value}/`);
+    });
+
+    it('should not change the line if the trailing slash is not needed', async () => {
+      expect(utils.sanitizeRemapping(`${key}=${value}`)).toEqual(`${key}=${value}`);
+    });
+  });
+
   describe('getLineNumberFromSrc', () => {
     it('should return correct line number', async () => {
       const mockFileContent = '0\n1\n2\n3\n';