eve/dist/src/discover/grammar.js

Filesystem-first framework for durable backend AI agents that run anywhere.

import{join}from"node:path";import{createDiscoverErrorDiagnostic,createDiscoverWarningDiagnostic}from"#discover/diagnostics.js";import{getDirectoryEntryType}from"#discover/filesystem.js";import{createModuleSourceRef}from"#discover/manifest.js";import{collectFlatSlotCandidates}from"#discover/slots.js";import{lowerInstructionsMarkdown}from"#internal/helpers/markdown.js";import{discoverMarkdownSource}from"#discover/markdown.js";import{discoverNamedSourceDirectory,discoverNamedSourceDirectory as discoverNamedSourceDirectory$1}from"#discover/named-source-directory.js";const DISCOVER_MODULE_SLOT_COLLISION=`discover/module-slot-collision`,DISCOVER_REQUIRED_INSTRUCTIONS_MISSING=`discover/required-instructions-missing`,DISCOVER_DEPRECATED_SYSTEM_SLOT=`discover/deprecated-system-slot`,DISCOVER_SLOT_COLLISION=`discover/slot-collision`,DISCOVER_TOOLS_DIRECTORY_INVALID=`discover/tools-directory-invalid`,DISCOVER_HOOKS_DIRECTORY_INVALID=`discover/hooks-directory-invalid`,DISCOVER_CHANNELS_DIRECTORY_INVALID=`discover/channels-directory-invalid`,DISCOVER_TOOL_NAME_INVALID=`discover/tool-name-invalid`,DISCOVER_CONNECTION_NAME_INVALID=`discover/connection-name-invalid`,DISCOVER_SANDBOX_DIRECTORY_INVALID=`discover/sandbox-directory-invalid`,DISCOVER_INSTRUCTIONS_DIRECTORY_INVALID=`discover/instructions-directory-invalid`,DISCOVER_CHANNEL_NAME_INVALID=`discover/channel-name-invalid`,DISCOVER_HOOK_NAME_INVALID=`discover/hook-name-invalid`,TOOL_SLUG_PATTERN=/^[a-zA-Z][a-zA-Z0-9_-]{0,63}$/,CONNECTION_SLUG_PATTERN=/^[a-z][a-z0-9-]{0,63}$/,CHANNEL_SLUG_PATTERN=/^(\.?[a-z][a-z0-9-]{0,63}|\[[a-zA-Z][a-zA-Z0-9_]{0,63}\])$/,HOOK_SLUG_PATTERN=/^[a-zA-Z][a-zA-Z0-9_-]{0,63}$/,DISCOVER_UNSUPPORTED_DIRECTORY=`discover/unsupported-directory`;async function readSortedDirectoryEntries(e,t){let n=[...await e.readDirectory(t)];return n.sort((e,t)=>e.name.localeCompare(t.name)),n}async function discoverInstructionsSource(r){let i=r.rootEntries.some(e=>e.name===`instructions`&&e.isDirectory()),a=await discoverSlotSource({markdownFileName:`instructions.md`,moduleBaseName:`instructions`,rootEntries:r.rootEntries,rootPath:r.rootPath,slotLabel:`instructions`,source:r.source});if(i){let t=await discoverNamedSourceDirectory$1({allowMarkdown:!0,directoryName:`instructions`,invalidDirectoryCode:DISCOVER_INSTRUCTIONS_DIRECTORY_INVALID,invalidDirectoryMessage:`Expected "${join(r.rootPath,`instructions`)}" to be a directory of authored instructions.`,markdownLowerer:e=>lowerInstructionsMarkdown(e),recursive:!1,rootEntries:r.rootEntries,rootPath:r.rootPath,source:r.source}),n=[...t.sources];return a.source!==void 0&&n.unshift(a.source),{diagnostics:[...a.diagnostics,...t.diagnostics],instructions:n}}if(a.diagnostics.length>0||a.source!==void 0)return{diagnostics:a.diagnostics,instructions:a.source===void 0?[]:[a.source]};let o=await discoverSlotSource({markdownFileName:`system.md`,moduleBaseName:`system`,rootEntries:r.rootEntries,rootPath:r.rootPath,slotLabel:`system`,source:r.source});if(o.source!==void 0){let t=o.source.sourceKind===`markdown`?`system.md`:o.source.logicalPath;return{diagnostics:[createDiscoverWarningDiagnostic({code:DISCOVER_DEPRECATED_SYSTEM_SLOT,message:`The "${t}" slot is deprecated. Rename it to "${t.replace(/^system/,`instructions`)}" — the runtime still loads the legacy slot for now, but support will be removed in a future release.`,sourcePath:join(r.rootPath,t)}),...o.diagnostics],instructions:[o.source]}}return o.diagnostics.length>0?{diagnostics:o.diagnostics,instructions:[]}:r.required===!1?{diagnostics:[],instructions:[]}:{diagnostics:[createDiscoverErrorDiagnostic({code:DISCOVER_REQUIRED_INSTRUCTIONS_MISSING,message:`Expected authored instructions at "instructions.md", "instructions.ts", "instructions.cts", "instructions.mts", "instructions.js", "instructions.cjs", "instructions.mjs", or "instructions/" directory.`,sourcePath:r.rootPath})],instructions:[]}}async function discoverSlotSource(t){let n=collectFlatSlotCandidates(t.rootEntries,{markdownFileName:t.markdownFileName,moduleBaseName:t.moduleBaseName});if(n.markdownFileName!==void 0&&n.moduleFileNames.length>0)return{diagnostics:[createSlotCollisionDiagnostic(t.rootPath,t.slotLabel,[n.markdownFileName,...n.moduleFileNames])]};if(n.moduleFileNames.length>1)return{diagnostics:[createModuleSlotCollisionDiagnostic(t.rootPath,t.slotLabel,n.moduleFileNames)]};if(n.markdownFileName!==void 0)return{diagnostics:[],source:await discoverMarkdownSource({logicalPath:t.markdownFileName,lower:lowerInstructionsMarkdown,source:t.source,sourcePath:join(t.rootPath,n.markdownFileName)})};let[r]=n.moduleFileNames;return r===void 0?{diagnostics:[]}:{diagnostics:[],source:createModuleSourceRef({logicalPath:r})}}function discoverFlatModuleSource(e){let n=collectFlatSlotCandidates(e.rootEntries,{moduleBaseName:e.slotName});if(n.moduleFileNames.length>1)return{diagnostics:[createModuleSlotCollisionDiagnostic(e.rootPath,e.slotName,n.moduleFileNames)]};let[r]=n.moduleFileNames;return r===void 0?e.missingDiagnostic===void 0?{diagnostics:[]}:{diagnostics:[createDiscoverErrorDiagnostic({code:e.missingDiagnostic.code,message:e.missingDiagnostic.message,sourcePath:e.rootPath})]}:{diagnostics:[],module:createModuleSourceRef({logicalPath:r})}}function createToolNameDiagnostic(e,n){return TOOL_SLUG_PATTERN.test(e)?null:createDiscoverErrorDiagnostic({code:DISCOVER_TOOL_NAME_INVALID,message:`Tool filename "${e}" is not a legal tool name. Expected ASCII letters, digits, underscores, and dashes only, starting with a letter, up to 64 characters.`,sourcePath:n})}function createConnectionNameDiagnostic(e,n){return CONNECTION_SLUG_PATTERN.test(e)?null:createDiscoverErrorDiagnostic({code:DISCOVER_CONNECTION_NAME_INVALID,message:`Connection filename "${e}" is not a legal connection name. Expected lowercase ASCII letters, digits, and dashes only, starting with a letter, up to 64 characters.`,sourcePath:n})}function createChannelNameDiagnostic(e,n){return CHANNEL_SLUG_PATTERN.test(e)?null:createDiscoverErrorDiagnostic({code:DISCOVER_CHANNEL_NAME_INVALID,message:`Channel path segment "${e}" is not a legal channel name. Expected lowercase kebab-case (\`my-channel\`), optionally with a leading dot (\`.well-known\`), or a path parameter form (\`[sessionId]\`).`,sourcePath:n})}function createHookNameDiagnostic(e,n){return HOOK_SLUG_PATTERN.test(e)?null:createDiscoverErrorDiagnostic({code:DISCOVER_HOOK_NAME_INVALID,message:`Hook path segment "${e}" is not a legal hook name. Expected ASCII letters, digits, underscores, and dashes only, starting with a letter, up to 64 characters.`,sourcePath:n})}function createUnsupportedRootDirectoryDiagnostics(t){return t.rootEntries.flatMap(i=>!i.isDirectory()||t.classifyEntry(i.name,getDirectoryEntryType(i))!==`unknown`?[]:[createDiscoverWarningDiagnostic({code:DISCOVER_UNSUPPORTED_DIRECTORY,message:t.createUnsupportedDirectoryMessage(i.name),sourcePath:join(t.rootPath,i.name)})])}function createSlotCollisionDiagnostic(e,n,r){return createDiscoverErrorDiagnostic({code:DISCOVER_SLOT_COLLISION,message:`Found conflicting authored sources for "${n}": ${formatQuotedFileList(r)}.`,sourcePath:e})}function createModuleSlotCollisionDiagnostic(e,n,r){return createDiscoverErrorDiagnostic({code:DISCOVER_MODULE_SLOT_COLLISION,message:`Found multiple authored module sources for "${n}": ${formatQuotedFileList(r)}.`,sourcePath:e})}function formatQuotedFileList(e){return e.map(e=>`"${e}"`).join(`, `)}export{CHANNEL_SLUG_PATTERN,CONNECTION_SLUG_PATTERN,DISCOVER_CHANNELS_DIRECTORY_INVALID,DISCOVER_CHANNEL_NAME_INVALID,DISCOVER_CONNECTION_NAME_INVALID,DISCOVER_DEPRECATED_SYSTEM_SLOT,DISCOVER_HOOKS_DIRECTORY_INVALID,DISCOVER_HOOK_NAME_INVALID,DISCOVER_INSTRUCTIONS_DIRECTORY_INVALID,DISCOVER_MODULE_SLOT_COLLISION,DISCOVER_REQUIRED_INSTRUCTIONS_MISSING,DISCOVER_SANDBOX_DIRECTORY_INVALID,DISCOVER_SLOT_COLLISION,DISCOVER_TOOLS_DIRECTORY_INVALID,DISCOVER_TOOL_NAME_INVALID,DISCOVER_UNSUPPORTED_DIRECTORY,HOOK_SLUG_PATTERN,TOOL_SLUG_PATTERN,createChannelNameDiagnostic,createConnectionNameDiagnostic,createHookNameDiagnostic,createModuleSlotCollisionDiagnostic,createSlotCollisionDiagnostic,createToolNameDiagnostic,createUnsupportedRootDirectoryDiagnostics,discoverFlatModuleSource,discoverInstructionsSource,discoverNamedSourceDirectory,readSortedDirectoryEntries};