fix(unstable): align js lint context API with eslint

cli/js/40_lint.js

@@ -277,7 +277,8 @@ export class SourceCode {
  */
 export class Context {
   id;
-  fileName;
+  // ESLint uses lowercase
+  filename;
   sourceCode;
 
   /**
@@ -287,10 +288,18 @@ export class Context {
    */
   constructor(ctx, id, fileName) {
     this.id = id;
-    this.fileName = fileName;
+    this.filename = fileName;
     this.sourceCode = new SourceCode(ctx);
   }
 
+  getFilename() {
+    return this.filename;
+  }
+
+  getSourceCode() {
+    return this.sourceCode;
+  }
+
   /**
    * @param {Deno.lint.ReportData} data
    */

cli/tsc/dts/lib.deno.unstable.d.ts

@@ -1428,7 +1428,7 @@ declare namespace Deno {
       /**
        * Name of the file that's currently being linted.
        */
-      fileName: string;
+      filename: string;
       /**
        * Helper methods for working with the raw source code.
        */
@@ -1437,6 +1437,14 @@ declare namespace Deno {
        * Report a lint error.
        */
       report(data: ReportData): void;
+      /**
+       * @deprecated Use `ctx.filename` instead.
+       */
+      getFilename(): string;
+      /**
+       * @deprecated Use `ctx.sourceCode` instead.
+       */
+      getSourceCode(): SourceCode;
     }
 
     /**

tests/specs/lint/lint_plugin_rule_context/__test__.jsonc

@@ -0,0 +1,9 @@
+{
+  "tempDir": true,
+  "steps": [
+    {
+      "args": "lint main.ts",
+      "output": "log.out"
+    }
+  ]
+}

tests/specs/lint/lint_plugin_rule_context/deno.json

@@ -0,0 +1,5 @@
+{
+  "lint": {
+    "plugins": ["./plugin.ts"]
+  }
+}

tests/specs/lint/lint_plugin_rule_context/log.out

@@ -0,0 +1,13 @@
+ctx.id:
+test-plugin/my-rule
+
+ctx.filename:
+main.ts
+
+ctx.getFilename():
+main.ts
+
+ctx.getSourceCode():
+true
+
+Checked 1 file

tests/specs/lint/lint_plugin_rule_context/main.ts

@@ -0,0 +1,2 @@
+const value = "unfixed";
+console.log(value);

tests/specs/lint/lint_plugin_rule_context/plugin.ts

@@ -0,0 +1,30 @@
+import path from "node:path";
+
+export default {
+  name: "test-plugin",
+  rules: {
+    "my-rule": {
+      create(context) {
+        return {
+          VariableDeclarator(node) {
+            console.log(`ctx.id:`);
+            console.log(context.id);
+            console.log();
+
+            console.log(`ctx.filename:`);
+            console.log(path.relative(Deno.cwd(), context.filename));
+            console.log();
+
+            console.log(`ctx.getFilename():`);
+            console.log(path.relative(Deno.cwd(), context.getFilename()));
+            console.log();
+
+            console.log(`ctx.getSourceCode():`);
+            console.log(context.getSourceCode() === context.sourceCode);
+            console.log();
+          },
+        };
+      },
+    },
+  },
+} satisfies Deno.lint.Plugin;