| 1 | {"version":3,"file":"instrument.js","sourceRoot":"","sources":["../../../../src/lib/middleware/instrument.ts"],"names":[],"mappings":";;;;;;;;;;;;IAAA,yBAAoC;IACpC,oEAAsC;IACtC,yCAAoC;IACpC,6BAAqC;IAKrC,SAAwB,UAAU,CAAC,OAAgB;QACjD,IAAM,SAAS,GAEX,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,CAAC;QAExB,OAAO,UAAC,OAAO,EAAE,QAAQ,EAAE,IAAI;YACrB,IAAA,QAAQ,GAAe,OAAO,SAAtB,EAAE,QAAQ,GAAK,OAAO,SAAZ,CAAa;YACvC,IAAM,SAAS,GAAG,cAAO,CAAC,WAAI,CAAC,QAAQ,EAAE,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC;YAEvD,IACE,CAAC,CAAC,OAAO,CAAC,MAAM,KAAK,MAAM,IAAI,OAAO,CAAC,MAAM,KAAK,KAAK,CAAC;gBACxD,CAAC,QAAQ,CAAC,oBAAoB,CAAC,SAAS,CAAC,EACzC;gBACA,OAAO,IAAI,EAAE,CAAC;aACf;YAED,SAAI,CAAC,SAAS,EAAE,UAAC,KAAK,EAAE,KAAK;gBAE3B,IAAI,OAAO,CAAC,OAAO,EAAE;oBACnB,OAAO;iBACR;gBAED,IAAI,KAAK,IAAI,CAAC,KAAK,CAAC,MAAM,EAAE,EAAE;oBAC5B,QAAQ,CAAC,GAAG,CAAC,iBAAiB,EAAE,SAAS,EAAE,cAAc,CAAC,CAAC;oBAC3D,OAAO,IAAI,CAAC,qBAAW,CAAC,GAAG,EAAE,KAAc,EAAE,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;iBAClE;gBAED,QAAQ,CAAC,GAAG,CAAC,SAAS,EAAE,SAAS,CAAC,CAAC;gBAEnC,IAAM,IAAI,GAAG,UAAC,WAAmB,EAAE,IAAY;oBAC7C,QAAQ,CAAC,SAAS,CAAC,GAAG,EAAE;wBACtB,cAAc,EAAE,WAAW;wBAC3B,gBAAgB,EAAE,MAAM,CAAC,UAAU,CAAC,IAAI,CAAC;qBAC1C,CAAC,CAAC;oBACH,QAAQ,CAAC,GAAG,CAAC,OAAO,CAAC,MAAM,KAAK,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,EAAE,QAAQ,CAAC,CAAC;gBAChE,CAAC,CAAC;gBACF,IAAM,QAAQ,GAAG,UAAC,KAAa;oBAC7B,IAAI,KAAK,EAAE;wBACT,QAAQ,CAAC,IAAI,CACX,OAAO,EACP,IAAI,KAAK,CAAC,mBAAiB,SAAS,UAAK,KAAK,CAAC,OAAS,CAAC,CAC1D,CAAC;qBACH;yBAAM;wBACL,QAAQ,CAAC,GAAG,CAAC,QAAQ,EAAE,SAAS,CAAC,CAAC;qBACnC;gBACH,CAAC,CAAC;gBAEF,IAAM,WAAW,GAAG,mBAAM,CAAC,SAAS,CAAC,IAAI,0BAA0B,CAAC;gBACpE,IAAM,KAAK,GAAG,KAAK,CAAC,KAAK,CAAC,OAAO,EAAE,CAAC;gBAEpC,IAAI,SAAS,CAAC,SAAS,CAAC,IAAI,SAAS,CAAC,SAAS,CAAC,CAAC,KAAK,KAAK,KAAK,EAAE;oBAChE,IAAI,CAAC,WAAW,EAAE,SAAS,CAAC,SAAS,CAAC,CAAC,IAAI,CAAC,CAAC;iBAC9C;qBAAM;oBACL,aAAQ,CAAC,SAAS,EAAE,MAAM,EAAE,UAAC,KAAK,EAAE,IAAI;wBAEtC,IAAI,OAAO,CAAC,OAAO,EAAE;4BACnB,OAAO;yBACR;wBAED,IAAI,KAAK,EAAE;4BACT,OAAO,IAAI,CAAC,qBAAW,CAAC,GAAG,EAAE,KAAK,EAAE,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;yBACzD;wBAKD,IAAI,GAAG,QAAQ,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,CAAC;wBAChD,SAAS,CAAC,SAAS,CAAC,GAAG;4BAGrB,KAAK,OAAA;4BACL,IAAI,MAAA;yBACL,CAAC;wBACF,IAAI,CAAC,WAAW,EAAE,IAAI,CAAC,CAAC;oBAC1B,CAAC,CAAC,CAAC;iBACJ;YACH,CAAC,CAAC,CAAC;QACL,CAAC,CAAC;IACJ,CAAC;IA9ED,6BA8EC","sourcesContent":["import { stat, readFile } from 'fs';\nimport createError from 'http-errors';\nimport { lookup } from 'mime-types';\nimport { join, resolve } from 'path';\nimport { RequestHandler } from 'express';\n\nimport { Context } from '../Server';\n\nexport default function instrument(context: Context): RequestHandler {\n const codeCache: {\n [filename: string]: { mtime: number; data: string };\n } = Object.create(null);\n\n return (request, response, next) => {\n const { basePath, executor } = context;\n const wholePath = resolve(join(basePath, request.url));\n\n if (\n !(request.method === 'HEAD' || request.method === 'GET') ||\n !executor.shouldInstrumentFile(wholePath)\n ) {\n return next();\n }\n\n stat(wholePath, (error, stats) => {\n // The server was stopped before this file was served\n if (context.stopped) {\n return;\n }\n\n if (error || !stats.isFile()) {\n executor.log('Unable to serve', wholePath, '(unreadable)');\n return next(createError(404, error as Error, { expose: false }));\n }\n\n executor.log('Serving', wholePath);\n\n const send = (contentType: string, data: string) => {\n response.writeHead(200, {\n 'Content-Type': contentType,\n 'Content-Length': Buffer.byteLength(data),\n });\n response.end(request.method === 'HEAD' ? '' : data, callback);\n };\n const callback = (error?: Error) => {\n if (error) {\n executor.emit(\n 'error',\n new Error(`Error serving ${wholePath}: ${error.message}`)\n );\n } else {\n executor.log('Served', wholePath);\n }\n };\n\n const contentType = lookup(wholePath) || 'application/octet-stream';\n const mtime = stats.mtime.getTime();\n\n if (codeCache[wholePath] && codeCache[wholePath].mtime === mtime) {\n send(contentType, codeCache[wholePath].data);\n } else {\n readFile(wholePath, 'utf8', (error, data) => {\n // The server was stopped in the middle of the file read\n if (context.stopped) {\n return;\n }\n\n if (error) {\n return next(createError(404, error, { expose: false }));\n }\n\n // providing `wholePath` to the instrumenter instead of a\n // partial filename is necessary because lcov.info requires\n // full path names as per the lcov spec\n data = executor.instrumentCode(data, wholePath);\n codeCache[wholePath] = {\n // strictly speaking mtime could reflect a previous\n // version, assume those race conditions are rare\n mtime,\n data,\n };\n send(contentType, data);\n });\n }\n });\n };\n}\n"]} |