node.js - Running a JavaScript program requiring jsfeat -

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i have downloaded jsfeat here, , unzipped downloaded file.

inside directory, wrote following:

require("./build/jsfeat.js"); var matrix = new jsfeat.matrix_t(2,2, jsfeat.u8_t | jsfeat.c1_t); matrix.data[1] = 4;  console.log(matrix.data[1]);

i ran program follows:

$ node matrix.js

but, got following error:

/users/abc/desktop/javascript/inspirit-jsfeat-59cc928/matrix.js:2     var matrix = new jsfeat.matrix_t(2,2, jsfeat.u8_t | jsfeat.c1_t);                      ^  referenceerror: jsfeat not defined     @ object.<anonymous> (/users/abc/desktop/javascript/inspirit-jsfeat-59cc928/matrix.js:2:19)     @ module._compile (module.js:425:26)     @ object.module._extensions..js (module.js:432:10)     @ module.load (module.js:356:32)     @ function.module._load (module.js:311:12)     @ function.module.runmain (module.js:457:10)     @ startup (node.js:136:18)     @ node.js:972:3

why that? how can solve issue?

thanks.

you need assign imported module variable:

var jsfeat = require("./build/jsfeat.js");

if prefer install module npm save downloading manually:

$ npm install jsfeat

the module saved ./node_modules/jsfeat. can require var jsfeat = require('jsfeat').


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