Error: Cannot find module 'syntax-parser'

[huturen]

node版本： v8.11.3

步骤：

1. npm i syntax-parser --save

2. 代码

const { createLexer } = require('syntax-parser');

const myLexer = createLexer([
    {
        type: 'whitespace',
        regexes: [/^(\s+)/],
        ignore: true
    },
    {
        type: 'word',
        regexes: [/^([a-zA-Z0-9]+)/]
    },
    {
        type: 'operator',
        regexes: [
            /^(\(|\))/, // '(' ')'.
            /^(\+|\-)/ // operators for + -.
        ]
    }
]);
console.log(myLexer('a + b'));

3. 结果：

module.js:549
    throw err;
    ^

Error: Cannot find module 'syntax-parser'
    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (~/sqlweb/test.js:2:25)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)