Jan 21, 2019 · Jan 21, 2019 · Jan 21, 2019
diff --git a/packages/eslint-plugin/lib/rules/no-unused-vars.js b/packages/eslint-plugin/lib/rules/no-unused-vars.js
      }
    }

    /**
     * Mark heritage clause as used
     * @param node The node currently being traversed
     * @returns {void}
     */
    function markHeritageAsUsed(node) {
      switch (node.type) {
        case 'Identifier':
          context.markVariableAsUsed(node.name);
          break;
        case 'MemberExpression':
          markHeritageAsUsed(node.object);
          break;
        case 'CallExpression':
          markHeritageAsUsed(node.callee);
          break;
      }
    }

    //----------------------------------------------------------------------
    // Public
    //----------------------------------------------------------------------
      'TSTypeReference Identifier'(node) {
        context.markVariableAsUsed(node.name);
      },
      'TSClassImplements Identifier'(node) {
        context.markVariableAsUsed(node.name);
      TSInterfaceHeritage(node) {
        if (node.expression) {
          markHeritageAsUsed(node.expression);
        }
      },
      TSClassImplements(node) {
        if (node.expression) {
          markHeritageAsUsed(node.expression);
        }
      },
      'TSParameterProperty Identifier'(node) {
        // just assume parameter properties are used
diff --git a/packages/eslint-plugin/tests/lib/rules/no-unused-vars.js b/packages/eslint-plugin/tests/lib/rules/no-unused-vars.js
    new (value?: any): Object,
    foo(): string
 }
    `,
    `
 import foo from 'foo';
 export interface Bar extends foo.i18n {}
    `,
    `
 import foo from 'foo';
 import bar from 'foo';
 export interface Bar extends foo.i18n<bar> {}
    `
  ],

          column: 6
        }
      ]
    },
    {
      code: `
 import test from 'test';
 import baz from 'baz';
 export interface Bar extends baz.test {}
    `,
      errors: [
        {
          message: "'test' is defined but never used.",
          line: 2,
          column: 8
        }
      ]
    },
    {
      code: `
 import test from 'test';
 import baz from 'baz';
 export interface Bar extends baz().test {}
    `,
      errors: [
        {
          message: "'test' is defined but never used.",
          line: 2,
          column: 8
        }
      ]
    },
    {
      code: `
 import test from 'test';
 import baz from 'baz';
 export class Bar implements baz.test {}
    `,
      errors: [
        {
          message: "'test' is defined but never used.",
          line: 2,
          column: 8
        }
      ]
    },
    {
      code: `
 import test from 'test';
 import baz from 'baz';
 export class Bar implements baz().test {}
    `,
      errors: [
        {
          message: "'test' is defined but never used.",
          line: 2,
          column: 8
        }
      ]
    }
  ]
 });
Original file line number	Diff line number	Diff line change
Expand Up		@@ -45,6 +45,25 @@ module.exports = Object.assign({}, baseRule, {
		}
		}

		/**
		* Mark heritage clause as used
		* @param node The node currently being traversed
		* @returns {void}
		*/
		function markHeritageAsUsed(node) {
		switch (node.type) {
		case 'Identifier':
		context.markVariableAsUsed(node.name);
		break;
		case 'MemberExpression':
		markHeritageAsUsed(node.object);
		break;
		case 'CallExpression':
		markHeritageAsUsed(node.callee);
		break;
		}
		}

		//----------------------------------------------------------------------
		// Public
		//----------------------------------------------------------------------
Expand All		@@ -54,8 +73,15 @@ module.exports = Object.assign({}, baseRule, {
		'TSTypeReference Identifier'(node) {
		context.markVariableAsUsed(node.name);
		},
		'TSClassImplements Identifier'(node) {
		context.markVariableAsUsed(node.name);
		TSInterfaceHeritage(node) {
		if (node.expression) {
		markHeritageAsUsed(node.expression);
		}
		},
		TSClassImplements(node) {
		if (node.expression) {
		markHeritageAsUsed(node.expression);
		}
		},
		'TSParameterProperty Identifier'(node) {
		// just assume parameter properties are used
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -541,6 +541,15 @@ declare var Foo: {
		new (value?: any): Object,
		foo(): string
		}
		`,
		`
		import foo from 'foo';
		export interface Bar extends foo.i18n {}
		`,
		`
		import foo from 'foo';
		import bar from 'foo';
		export interface Bar extends foo.i18n<bar> {}
		`
		],

Expand DownExpand Up		@@ -763,6 +772,62 @@ enum FormFieldIds {
		column: 6
		}
		]
		},
		{
		code: `
		import test from 'test';
		import baz from 'baz';
		export interface Bar extends baz.test {}
		`,
		errors: [
		{
		message: "'test' is defined but never used.",
		line: 2,
		column: 8
		}
		]
		},
		{
		code: `
		import test from 'test';
		import baz from 'baz';
		export interface Bar extends baz().test {}
		`,
		errors: [
		{
		message: "'test' is defined but never used.",
		line: 2,
		column: 8
		}
		]
		},
		{
		code: `
		import test from 'test';
		import baz from 'baz';
		export class Bar implements baz.test {}
		`,
		errors: [
		{
		message: "'test' is defined but never used.",
		line: 2,
		column: 8
		}
		]
		},
		{
		code: `
		import test from 'test';
		import baz from 'baz';
		export class Bar implements baz().test {}
		`,
		errors: [
		{
		message: "'test' is defined but never used.",
		line: 2,
		column: 8
		}
		]
		}
		]
		});