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DependencyGraph,
DomainAssignment,
DomainSignals,
ExportInfo,
} from '../types';
import { singularize } from '../utils/string-utils';
/**
* Calculate confidence score for a domain assignment based on signals.
*
* @param signals - The set of semantic signals detected for a domain.
* @returns Numerical confidence score (0-1).
*/
export function calculateDomainConfidence(signals: DomainSignals): number {
const weights = {
coUsage: 0.35,
typeReference: 0.3,
exportName: 0.15,
importPath: 0.1,
folderStructure: 0.1,
};
let confidence = 0;
if (signals.coUsage) confidence += weights.coUsage;
if (signals.typeReference) confidence += weights.typeReference;
if (signals.exportName) confidence += weights.exportName;
if (signals.importPath) confidence += weights.importPath;
if (signals.folderStructure) confidence += weights.folderStructure;
return confidence;
}
/**
* Infer domain from semantic analysis (co-usage + types) to identify logical modules.
*
* @param file - The file path to infer domain for.
* @param exportName - The specific export identifier.
* @param graph - The full dependency graph.
* @param coUsageMatrix - Matrix of files frequently imported together.
* @param typeGraph - Map of type references to files.
* @param exportTypeRefs - Optional list of types referenced by the export.
* @returns Array of potential domain assignments with confidence scores.
*/
export function inferDomainFromSemantics(
file: string,
exportName: string,
graph: DependencyGraph,
coUsageMatrix: Map<string, Map<string, number>>,
typeGraph: Map<string, Set<string>>,
exportTypeRefs?: string[]
): DomainAssignment[] {
const domainSignals = new Map<string, DomainSignals>();
const coUsages = coUsageMatrix.get(file) || new Map();
const strongCoUsages = Array.from(coUsages.entries())
.filter(([, count]) => count >= 3)
.map(([coFile]) => coFile);
for (const coFile of strongCoUsages) {
const coNode = graph.nodes.get(coFile);
Eif (coNode) {
for (const exp of coNode.exports) {
Eif (exp.inferredDomain && exp.inferredDomain !== 'unknown') {
const domain = exp.inferredDomain;
Eif (!domainSignals.has(domain)) {
domainSignals.set(domain, {
coUsage: false,
typeReference: false,
exportName: false,
importPath: false,
folderStructure: false,
});
}
domainSignals.get(domain)!.coUsage = true;
}
}
}
}
if (exportTypeRefs) {
for (const typeRef of exportTypeRefs) {
const filesWithType = typeGraph.get(typeRef);
Eif (filesWithType) {
for (const typeFile of filesWithType) {
Iif (typeFile === file) continue;
const typeNode = graph.nodes.get(typeFile);
Eif (typeNode) {
for (const exp of typeNode.exports) {
Eif (exp.inferredDomain && exp.inferredDomain !== 'unknown') {
const domain = exp.inferredDomain;
Eif (!domainSignals.has(domain)) {
domainSignals.set(domain, {
coUsage: false,
typeReference: false,
exportName: false,
importPath: false,
folderStructure: false,
});
}
domainSignals.get(domain)!.typeReference = true;
}
}
}
}
}
}
}
const assignments: DomainAssignment[] = [];
for (const [domain, signals] of domainSignals) {
const confidence = calculateDomainConfidence(signals);
Eif (confidence >= 0.3) assignments.push({ domain, confidence, signals });
}
assignments.sort((a, b) => b.confidence - a.confidence);
return assignments;
}
/**
* Regex-based export extraction (legacy/fallback)
*
* @param content - Source code content.
* @param filePath - Optional file path for domain context.
* @param domainOptions - Optional overrides for domain keywords.
* @param fileImports - Optional list of actual imports for semantic context.
* @returns Array of extracted export information.
*/
export function extractExports(
content: string,
filePath?: string,
domainOptions?: { domainKeywords?: string[] },
fileImports?: string[]
): ExportInfo[] {
const exports: ExportInfo[] = [];
const patterns = [
/export\s+function\s+(\w+)/g,
/export\s+class\s+(\w+)/g,
/export\s+const\s+(\w+)/g,
/export\s+type\s+(\w+)/g,
/export\s+interface\s+(\w+)/g,
/export\s+default/g,
];
const types: ExportInfo['type'][] = [
'function',
'class',
'const',
'type',
'interface',
'default',
];
patterns.forEach((pattern, index) => {
let match;
while ((match = pattern.exec(content)) !== null) {
const name = match[1] || 'default';
const type = types[index];
const inferredDomain = inferDomain(
name,
filePath,
domainOptions,
fileImports
);
exports.push({ name, type, inferredDomain });
}
});
return exports;
}
/**
* Infer domain from name, path, or imports
*
* @param name - The identifier name to analyze.
* @param filePath - Optional file path for structure context.
* @param domainOptions - Optional overrides for domain keywords.
* @param fileImports - Optional list of imports for domain context.
* @returns The inferred domain name (string).
*/
export function inferDomain(
name: string,
filePath?: string,
domainOptions?: { domainKeywords?: string[] },
fileImports?: string[]
): string {
const lower = name.toLowerCase();
const tokens = Array.from(
new Set(
lower
.replace(/([a-z0-9])([A-Z])/g, '$1 $2')
.replace(/[^a-z0-9]+/gi, ' ')
.split(' ')
.filter(Boolean)
)
);
const defaultKeywords = [
'authentication',
'authorization',
'payment',
'invoice',
'customer',
'product',
'order',
'cart',
'user',
'admin',
'repository',
'controller',
'service',
'config',
'model',
'view',
'auth',
];
const domainKeywords = domainOptions?.domainKeywords?.length
? [...domainOptions.domainKeywords, ...defaultKeywords]
: defaultKeywords;
for (const keyword of domainKeywords) {
if (tokens.includes(keyword)) return keyword;
}
for (const keyword of domainKeywords) {
if (lower.includes(keyword)) return keyword;
}
if (fileImports) {
for (const importPath of fileImports) {
const segments = importPath.split('/');
for (const segment of segments) {
const segLower = segment.toLowerCase();
const singularSegment = singularize(segLower);
for (const keyword of domainKeywords) {
if (
singularSegment === keyword ||
segLower === keyword ||
segLower.includes(keyword)
)
return keyword;
}
}
}
}
if (filePath) {
const segments = filePath.split('/');
for (const segment of segments) {
const segLower = segment.toLowerCase();
const singularSegment = singularize(segLower);
for (const keyword of domainKeywords) {
if (singularSegment === keyword || segLower === keyword) return keyword;
}
}
}
return 'unknown';
}
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