Encounter nodejs installation exception so can not go forward

[virgilhuang]

2067 verbose stack SyntaxError: Unexpected end of JSON input while parsing near '...e":"^4.4.0","lodash.p'
2067 verbose stack at JSON.parse ()
2067 verbose stack at parseJson (/usr/local/lib/node_modules/npm/node_modules/json-parse-better-errors/index.js:7:17)
2067 verbose stack at consumeBody.call.then.buffer (/usr/local/lib/node_modules/npm/node_modules/pacote/node_modules/make-fetch-happen/node_modules/node-fetch-npm/src/body.js:96:50)
2067 verbose stack at
2067 verbose stack at process._tickCallback (internal/process/next_tick.js:188:7)
2068 verbose cwd /Users/hxy/Documents/dev4/iBookmark
2069 verbose Darwin 17.5.0
2070 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "i"
2071 verbose node v8.11.1
2072 verbose npm v6.0.1
2073 error Unexpected end of JSON input while parsing near '...e":"^4.4.0","lodash.p'
2074 verbose exit [ 1, true ]