我正在尝试安装mjml2json软件包here。我已经安装到一个文件夹中，并且在同一目录中有一个input.mjml示例文件，但是在安装时它无法识别该命令。
谁能告诉我我要去哪里错了？我的json2mjml也有相同的问题，很可能是相同的原因。
yarn add mjml2json
yarn add v1.7.0
info No lockfile found.
(node:31868) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
[1/4] Resolving packages...
warning mjml2json > mjml > mjml-accordion > react > fbjs > core-js@1.2.7: core-js@<2.6.5 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2.
[2/4] Fetching packages...
info fsevents@1.2.7: The platform "win32" is incompatible with this module.
info "fsevents@1.2.7" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
[4/4] Building fresh packages...
success Saved lockfile.
warning Your current version of Yarn is out of date. The latest version is "1.15.2", while you're on "1.7.0".
success Saved 247 new dependencies.
info Direct dependencies
└─ mjml2json@1.0.1
info All dependencies
├─ abbrev@1.1.1
├─ ajv@6.10.0
├─ ansi-styles@2.2.1
├─ anymatch@1.3.2
├─ arr-flatten@1.1.0
├─ asap@2.0.6
├─ asn1@0.2.4
├─ assign-symbols@1.0.0
├─ async-each@1.0.2
├─ async@2.6.2
├─ asynckit@0.4.0
├─ atob@2.1.2
├─ aws-sign2@0.7.0
├─ aws4@1.8.0
├─ balanced-match@1.0.0
├─ base@0.11.2
├─ bcrypt-pbkdf@1.0.2
├─ binary-extensions@1.13.1
├─ brace-expansion@1.1.11
├─ braces@1.8.5
├─ cache-base@1.0.1
├─ camel-case@3.0.0
├─ caseless@0.12.0
├─ chalk@1.1.3
├─ chokidar@1.7.0
├─ class-utils@0.3.6
├─ clean-css@4.2.1
├─ collection-visit@1.0.0
├─ combined-stream@1.0.7
├─ commander@2.20.0
├─ concat-map@0.0.1
├─ config-chain@1.1.12
├─ copy-descriptor@0.1.1
├─ core-js@1.2.7
├─ core-util-is@1.0.2
├─ create-react-class@15.6.3
├─ cross-spawn@5.1.0
├─ css-select@1.2.0
├─ css-what@2.1.3
├─ dashdash@1.14.1
├─ datauri@1.1.0
├─ debug@2.6.9
├─ decode-uri-component@0.2.0
├─ deep-extend@0.5.1
├─ delayed-stream@1.0.0
├─ domhandler@2.4.2
├─ domutils@1.7.0
├─ ecc-jsbn@0.1.2
├─ editorconfig@0.15.3
├─ encoding@0.1.12
├─ entities@1.1.2
├─ escape-string-regexp@1.0.5
├─ expand-brackets@0.1.5
├─ expand-range@1.8.2
├─ extend@3.0.2
├─ extglob@0.3.2
├─ extsprintf@1.3.0
├─ fast-deep-equal@2.0.1
├─ fast-json-stable-stringify@2.0.0
├─ filename-regex@2.0.1
├─ fill-range@4.0.0
├─ for-in@1.0.2
├─ for-own@0.1.5
├─ forever-agent@0.6.1
├─ form-data@2.3.3
├─ fs.realpath@1.0.0
├─ get-value@2.0.6
├─ getpass@0.1.7
├─ glob-base@0.3.0
├─ glob@7.1.3
├─ graceful-fs@4.1.15
├─ har-schema@2.0.0
├─ har-validator@5.1.3
├─ has-ansi@2.0.0
├─ has-value@1.0.0
├─ has-values@1.0.0
├─ he@1.2.0
├─ hoist-non-react-statics@1.2.0
├─ html-minifier@3.5.21
├─ http-signature@1.2.0
├─ iconv-lite@0.4.24
├─ image-size@0.6.3
├─ immutable@3.8.2
├─ inflight@1.0.6
├─ inherits@2.0.3
├─ ini@1.3.5
├─ is-accessor-descriptor@1.0.0
├─ is-binary-path@1.0.1
├─ is-data-descriptor@1.0.0
├─ is-descriptor@1.0.2
├─ is-dotfile@1.0.3
├─ is-equal-shallow@0.1.3
├─ is-plain-object@2.0.4
├─ is-posix-bracket@0.1.1
├─ is-primitive@2.0.0
├─ is-stream@1.1.0
├─ is-typedarray@1.0.0
├─ is-windows@1.0.2
├─ isarray@1.0.0
├─ isexe@2.0.0
├─ isomorphic-fetch@2.2.1
├─ isstream@0.1.2
├─ jquery@3.3.1
├─ js-beautify@1.9.1
├─ js-tokens@4.0.0
├─ json-schema-traverse@0.4.1
├─ json-schema@0.2.3
├─ json-stringify-safe@5.0.1
├─ jsprim@1.4.1
├─ juice@4.3.2
├─ kind-of@3.2.2
├─ lodash.assignin@4.2.0
├─ lodash.bind@4.2.1
├─ lodash.defaults@4.2.0
├─ lodash.filter@4.6.0
├─ lodash.flatten@4.4.0
├─ lodash.foreach@4.5.0
├─ lodash.map@4.6.0
├─ lodash.merge@4.6.1
├─ lodash.pick@4.4.0
├─ lodash.reduce@4.6.0
├─ lodash.reject@4.6.0
├─ lodash.some@4.6.0
├─ lodash.unescape@4.0.1
├─ lodash@4.17.11
├─ lower-case@1.1.4
├─ lru-cache@4.1.5
├─ map-visit@1.0.0
├─ math-random@1.0.4
├─ mensch@0.3.3
├─ micromatch@2.3.11
├─ mime-db@1.38.0
├─ mime-types@2.1.22
├─ mimer@0.3.2
├─ minimatch@3.0.4
├─ minimist@0.0.8
├─ mixin-deep@1.3.1
├─ mjml-accordion@3.3.5
├─ mjml-button@3.3.5
├─ mjml-carousel@3.3.5
├─ mjml-cli@3.3.5
├─ mjml-column@3.3.5
├─ mjml-container@3.3.5
├─ mjml-divider@3.3.5
├─ mjml-group@3.3.5
├─ mjml-head-attributes@3.3.5
├─ mjml-head-font@3.3.5
├─ mjml-head-preview@3.3.5
├─ mjml-head-style@3.3.5
├─ mjml-head-title@3.3.5
├─ mjml-hero@3.3.5
├─ mjml-html@3.3.5
├─ mjml-image@3.3.5
├─ mjml-invoice@3.3.5
├─ mjml-list@3.3.5
├─ mjml-location@3.3.5
├─ mjml-navbar@3.3.5
├─ mjml-raw@3.3.5
├─ mjml-social@3.3.5
├─ mjml-spacer@3.3.5
├─ mjml-table@3.3.5
├─ mjml-text@3.3.5
├─ mjml-validator@3.3.5
├─ mjml-wrapper@3.3.5
├─ mjml@3.3.5
├─ mjml2json@1.0.1
├─ mkdirp@0.5.1
├─ ms@2.0.0
├─ mz@2.7.0
├─ nanomatch@1.2.13
├─ node-fetch@1.7.3
├─ nopt@4.0.1
├─ normalize-path@2.1.1
├─ nth-check@1.0.2
├─ numeral@2.0.6
├─ oauth-sign@0.9.0
├─ object-assign@4.1.1
├─ object-copy@0.1.0
├─ object.omit@2.0.1
├─ os-homedir@1.0.2
├─ os-tmpdir@1.0.2
├─ osenv@0.1.5
├─ param-case@2.1.1
├─ parse-glob@3.0.4
├─ pascalcase@0.1.1
├─ performance-now@2.1.0
├─ posix-character-classes@0.1.1
├─ preserve@0.2.0
├─ process-nextick-args@2.0.0
├─ promise@7.3.1
├─ proto-list@1.2.4
├─ pseudomap@1.0.2
├─ psl@1.1.31
├─ punycode@1.4.1
├─ qs@6.5.2
├─ randomatic@3.1.1
├─ react-dom@15.6.2
├─ react-is@16.8.6
├─ readable-stream@2.3.6
├─ readdirp@2.2.1
├─ regex-cache@0.4.4
├─ relateurl@0.2.7
├─ remove-trailing-separator@1.1.0
├─ request@2.88.0
├─ resolve-url@0.2.1
├─ ret@0.1.15
├─ safer-buffer@2.1.2
├─ semver@5.7.0
├─ set-value@2.0.0
├─ setimmediate@1.0.5
├─ shebang-command@1.2.0
├─ shebang-regex@1.0.0
├─ sigmund@1.0.1
├─ slick@1.12.2
├─ snapdragon-node@2.1.1
├─ snapdragon-util@3.0.1
├─ source-map-resolve@0.5.2
├─ source-map-url@0.4.0
├─ source-map@0.6.1
├─ split-string@3.1.0
├─ sshpk@1.16.1
├─ static-extend@0.1.2
├─ string_decoder@1.1.1
├─ strip-ansi@3.0.1
├─ supports-color@2.0.0
├─ thenify-all@1.6.0
├─ thenify@3.3.0
├─ to-regex-range@2.1.1
├─ tough-cookie@2.4.3
├─ tunnel-agent@0.6.0
├─ tweetnacl@0.14.5
├─ ua-parser-js@0.7.19
├─ uglify-js@3.4.10
├─ union-value@1.0.0
├─ unset-value@1.0.0
├─ upper-case@1.1.3
├─ uri-js@4.2.2
├─ urix@0.1.0
├─ use@3.1.1
├─ util-deprecate@1.0.2
├─ uuid@3.3.2
├─ valid-data-url@0.1.6
├─ verror@1.10.0
├─ web-resource-inliner@4.3.1
├─ whatwg-fetch@3.0.0
├─ which@1.3.1
└─ xtend@4.0.1
Done in 81.14s.
PS C:\Exercise\Private\mjml> mjml2json input.mjml output.json
mjml2json : The term 'mjml2json' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and
try again.
At line:1 char:1
+ mjml2json input.mjml output.json
+ ~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (mjml2json:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
PSC:\Exercise\Private\mjml> node mjml2json input.mjml output.json
internal/modules/cjs/loader.js:584
throw err;
^
Error: Cannot find module 'C:\Exercise\Private\mjml'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:582:15)
at Function.Module._load (internal/modules/cjs/loader.js:508:25)
at Function.Module.runMain (internal/modules/cjs/loader.js:754:12)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
PS C:\Exercise\Private\mjml>