fuse-box
Version:
Fuse-Box a bundler that does it right
85 lines (84 loc) • 4.12 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Phase_1_ImportLink = void 0;
const importHelpers_1 = require("../../compiler/helpers/importHelpers");
const AST_1 = require("../../compiler/interfaces/AST");
const NODES_OF_INTEREST = {
[AST_1.ASTType.ExportAllDeclaration]: 1,
[AST_1.ASTType.ExportNamedDeclaration]: 1,
[AST_1.ASTType.ImportDeclaration]: 1,
[AST_1.ASTType.ImportEqualsDeclaration]: 1,
};
function Phase_1_ImportLink() {
return {
productionWarmupPhase: ({ module, productionContext }) => {
const tree = module.moduleTree;
const refs = module.moduleSourceRefs || {};
function isEligibleRequire(node) {
return (node.type === AST_1.ASTType.CallExpression &&
node.callee.name === 'require' &&
node.arguments.length === 1 &&
node.arguments[0].type === 'Literal' &&
!!refs[node.arguments[0].value]);
}
function isEligibleImportOrExport(node) {
return (!!NODES_OF_INTEREST[node.type] &&
((!!node.source && !!refs[node.source.value]) ||
(!!node.moduleReference &&
node.moduleReference.expression &&
!!refs[node.moduleReference.expression.value])));
}
function isEligibleDynamicImport(node) {
const dynamicImport = importHelpers_1.getDynamicImport(node);
return !!dynamicImport && !!dynamicImport.source && !!refs[dynamicImport.source];
}
function shouldStyleImportRemove(node, parent) {
if (node.type === AST_1.ASTType.ExpressionStatement) {
if (node.expression && node.expression.type === AST_1.ASTType.CallExpression) {
if (node.expression.callee && node.expression.callee.name === 'require') {
const source = node.expression.arguments[0];
return source && refs[source.value] && refs[source.value].isStylesheet;
}
}
}
if (node.arguments && node.arguments[0]) {
const target = refs[node.arguments[0].value];
if (target && target.isStylesheet && parent.type !== AST_1.ASTType.VariableDeclarator) {
return true;
}
}
if (node.type === AST_1.ASTType.ImportDeclaration && node.specifiers.length === 0) {
const target = refs[node.source.value];
return target && target.isStylesheet;
}
}
return {
onEach: (schema) => {
const { node, parent } = schema;
if (!parent || parent.type === AST_1.ASTType.Program) {
return;
}
if (isEligibleDynamicImport(node) || isEligibleRequire(node)) {
tree.importReferences.register({ module, productionContext, schema });
}
if (shouldStyleImportRemove(node, parent)) {
return schema.remove();
}
},
onProgramBody: (schema) => {
const { node, parent } = schema;
if (isEligibleImportOrExport(node) || isEligibleRequire(node)) {
tree.importReferences.register({ module, productionContext, schema });
}
// we don't need the references in the code
// those will become real css files
// however, tracking should happen above (for css code splitting)
if (shouldStyleImportRemove(node, parent)) {
return schema.remove();
}
},
};
},
};
}
exports.Phase_1_ImportLink = Phase_1_ImportLink;