work in ionic2 fail?-Uncaught Error: Cannot find module “pdfjs-dist/web/compatibility”

Uncaught Error: Cannot find module “pdfjs-dist/web/compatibility”
at webpackMissingModule (pdf-viewer.component.js:6)
at Object.exports.byteLength (pdf-viewer.component.js:6)
at webpack_require (bootstrap b8bf910de33d251d2a9b:54)
at Object.defineProperty.value (index.js:4)
at webpack_require (bootstrap b8bf910de33d251d2a9b:54)
at Object.253 (main.ts:9)
at webpack_require (bootstrap b8bf910de33d251d2a9b:54)
at Object.238 (main.js:412)
at webpack_require (bootstrap b8bf910de33d251d2a9b:54)
at webpackJsonpCallback (bootstrap b8bf910de33d251d2a9b:25)