gulp build, stops without errors

[andimclean]

Having copied the gulpfile.js from this project for my polymer app, and installed the necessary npm modules.

on running gulp build I get :
[22:32:00] Using gulpfile ~/development/wawm/gulpfile.js
[22:32:00] Starting 'build'...
Deleting build/gulp directory...
Analyzing build dependencies...

then it pauses for a while then the command prompt returns
The images and the bower components have been copied, but none of my scripts.

No errors are shown.Any hints on what I'm doing wrong.

[andimclean]

I dbl checked package.json and noted that I was using a different version of gulp,
Upon chanigng to the same one in the package.json
I now get:
[22:41:50] The following tasks did not complete: build
[22:41:50] Did you forget to signal async completion?

I'm using node 7.6.0 and npm 4.1.2

[stramel]

@andimclean which gulp version are you using? You should be using gulp4 installed using npm i -g gulpjs/gulp#4.0

[andimclean]

I was using an older version of gulp, which caused the build just to stop.

Now I get the error I mentioned above.

[robdodson]

hmmmmmm @FredKSchott any ideas?

[andimclean]

I ran polymer lint, fixed a few missing properties and now the only errors I get are in the bower_components.

Polymer build run, but warns of some syntax errors:

polymer build
info: Preparing build...
info: Building application...
info: Generating build/unbundled...
info: Generating build/bundled...
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/wawm-app.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: operator (>)',
filename: 0,
line: 29,
col: 99,
pos: 641,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2635:9)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)\n at expr_ops (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2832:24)\n at maybe_conditional (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2837:20)\n at maybe_assign (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2861:20)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/addable-fab.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: operator (>)',
filename: 0,
line: 40,
col: 71,
pos: 1296,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2635:9)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)\n at expr_ops (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2832:24)\n at maybe_conditional (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2837:20)\n at maybe_assign (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2861:20)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/animal-details.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token punc «(», expected punc «:»',
filename: 0,
line: 38,
col: 23,
pos: 1160,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at expect_token (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2115:9)\n at expect (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2118:36)\n at eval (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2691:13)\n at eval (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2141:24)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2621:35)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/animal-image.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token punc «(», expected punc «:»',
filename: 0,
line: 16,
col: 24,
pos: 424,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at expect_token (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2115:9)\n at expect (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2118:36)\n at eval (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2691:13)\n at eval (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2141:24)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2621:35)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/edit-animal.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: operator (>)',
filename: 0,
line: 34,
col: 43,
pos: 995,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2635:9)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)\n at expr_ops (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2832:24)\n at maybe_conditional (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2837:20)\n at maybe_assign (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2861:20)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/key-value-list.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: operator (>)',
filename: 0,
line: 24,
col: 73,
pos: 750,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2635:9)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)\n at expr_ops (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2832:24)\n at maybe_conditional (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2837:20)\n at maybe_assign (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2861:20)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/obj-array.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: name (Objarray)',
filename: 0,
line: 5,
col: 18,
pos: 69,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at semicolon (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2128:56)\n at simple_statement (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2319:73)\n at eval (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2188:19)\n at eval (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2141:24)\n at block_ (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2434:20)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/printer-popup.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: punc ())',
filename: 0,
line: 36,
col: 32,
pos: 2005,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2623:13)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)\n at expr_ops (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2832:24)\n at maybe_conditional (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2837:20)\n at maybe_assign (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2861:20)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/users-details.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: operator (>)',
filename: 0,
line: 47,
col: 79,
pos: 1599,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2635:9)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)\n at expr_ops (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2832:24)\n at maybe_conditional (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2837:20)\n at maybe_assign (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2861:20)' } }
warn: Unable to optimize .js file /home/andi/development/wawm/src/wawm-app/elements/vetcode-behaviour.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: operator (>)',
filename: 0,
line: 7,
col: 23,
pos: 303,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2635:9)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)\n at expr_ops (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2832:24)\n at maybe_conditional (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2837:20)\n at maybe_assign (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2861:20)' } }
Ignoring duplicate element definition: app-location
Ignoring duplicate element definition: firebase-app
Ignoring duplicate element definition: firebase-auth
Ignoring duplicate element definition: iron-pages
Ignoring duplicate element definition: custom-style
Ignoring duplicate element definition: dom-template
Ignoring duplicate element definition: dom-repeat
Ignoring duplicate element definition: array-selector
Ignoring duplicate element definition: dom-if
Ignoring duplicate element definition: dom-bind
Ignoring duplicate element definition: iron-location
Ignoring duplicate element definition: iron-query-params
Ignoring duplicate element definition: firebase-document
Ignoring duplicate element definition: iron-iconset-svg
Ignoring duplicate element definition: paper-icon-button
Ignoring duplicate element definition: iron-meta
Ignoring duplicate element definition: iron-meta-query
Ignoring duplicate element definition: iron-icon
Ignoring duplicate element definition: paper-ripple
warn: Unable to optimize .js file /home/andi/development/wawm/bower_components/paper-datatable/paper-datatable.html_script_0.js
{ err:
{ message: 'SyntaxError: Unexpected token: operator (>)',
filename: 0,
line: 195,
col: 31,
pos: 4716,
stack: 'Error\n at new JS_Parse_Error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1547:18)\n at js_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :1555:11)\n at croak (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2094:9)\n at token_error (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2102:9)\n at unexpected (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2108:9)\n at expr_atom (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2635:9)\n at maybe_unary (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2797:19)\n at expr_ops (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2832:24)\n at maybe_conditional (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2837:20)\n at maybe_assign (eval at (/usr/local/lib/node_modules/polymer-cli/node_modules/uglify-js/tools/node.js:28:1), :2861:20)' } }

[robdodson]

It looks like wawm-app.html may contain some busted js. Can you share a gist of that file?

[andimclean]

https://gist.github.com/andimclean/a4a2b761160e7ac5388afee57d5800ed

[andimclean]

any ideas on this issue?

[robdodson]

Hm not sure. Is your Lazy util written in es6?