fuse-box
Version:
Fuse-Box a bundler that does it right
69 lines (68 loc) • 3.17 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.CommonTSfeaturesTransformer = void 0;
const AST_1 = require("../../interfaces/AST");
const FUNC_EXPRESSIONS = { FunctionDeclaration: 1, FunctionExpression: 1 };
// to test: function maybeUnwrapEmpty<T>(value: T[]): T[];
// to test: (oi as any).foo
function CommonTSfeaturesTransformer() {
return {
target: { type: 'ts' },
commonVisitors: props => {
return {
onEach: (schema) => {
const { node, parent, property } = schema;
// handle "this" typings
// e.g function hey(this: number, a) {}
if (parent &&
property === 'params' &&
FUNC_EXPRESSIONS[parent.type] &&
node.type === 'Identifier' &&
node.name === 'this') {
return schema.remove();
}
if (node.declare) {
return schema.remove();
}
if (node.type === AST_1.ASTType.TypeAssertion || node.type === AST_1.ASTType.NonNullExpression) {
return schema.replace([node.expression]);
}
// EmptyBodyFunctionExpression is a specific buntis key
if (node.type === 'MethodDefinition' &&
node.value &&
(node.value.type === 'EmptyBodyFunctionExpression' || !node.value.body)) {
return schema.remove();
}
switch (node.type) {
case 'ClassProperty':
case AST_1.ASTType.AbstractClassProperty:
case AST_1.ASTType.AbstractMethodDefinition:
case AST_1.ASTType.DeclareFunction:
case AST_1.ASTType.IndexSignature:
case AST_1.ASTType.InterfaceDeclaration:
case AST_1.ASTType.TypeAliasDeclaration:
return schema.remove();
case 'ExportNamedDeclaration':
const decl = node.declaration;
if (decl) {
if (decl.declare || decl.type === AST_1.ASTType.InterfaceDeclaration) {
return schema.remove();
}
}
break;
case AST_1.ASTType.AsExpression:
return schema.replace([node.expression]);
case AST_1.ASTType.ParameterProperty:
return schema.replace([node.parameter]);
}
},
onProgramBody: (schema) => {
if (schema.node.declare) {
return schema.remove();
}
},
};
},
};
}
exports.CommonTSfeaturesTransformer = CommonTSfeaturesTransformer;