expression-evaluator | Extensible general purpose expression evaluator | Development Tools library

The question appears in comments of all questions about GroovyShell, like Using GroovyShell as "expression evaluator/engine" (or: How to reuse GroovyShell). Not a surprise, since the design of the API seems it's not covering this topic at all. Unfortunately, this was never discussed explicitly.

The problem in a compact form:

Static initialization:

Does anyone have experience publishing a .NET/Angular project to Netlify? I'm using the Angular Microsoft.AspNetCore.SpaTemplates template. On Netlify, I'm getting a non-zero exit code that's preventing me from publishing. Here is my output:

This Lark parser is based on this question and this website, but it fails when parsing a OR b OR c.

The website suggests:

First, I don't have much experience in .Net - especially within the last 7 years.

I'm trying to develop an application and would to incorporate another library (https://github.com/Giorgi/Math-Expression-Evaluator)

That library allows me to evaluate math expressions like Evaluate("a+b", a: 1,b: 1). The method signature is public decimal Evaluate(string expression, object argument = null)

1. I would like to understand better how .Net translates comma-separated arguments into a single "argument".
2. I'm not sure how to create that argument dynamically.. for example, iterating through a list of values and creating an object that will match the appropriate argument for that signature.

I'm really just looking for pointers for documentation and more information.. Thanks for anything.

EDIT: Sorry.. purposely left it broad because I wasn't looking for people to do my work for me.. just can't seem to find a starting point to do my own research.

The method is called like

I'm trying to go on my angular 2 webapp but I get this error on each page :

I haven't changed anything in the app, and it works on computers of people of my team.

Is it caused by these warnings when npm install ?

npm WARN deprecated angular2-google-maps@0.17.0: Please use the new package name
@agm/core - Details here: htt://... npm WARN prefer global node-gyp@3.6.2 should be installed with -g

node-sass@4.5.3 install C:...\node_modules\node-sass node scripts/install.js

Downloading binary from https://github.com/sass/node-sass/releases/download/v4.5
.3/win32-x64-48_binding.node Download complete Binary saved to C:...\node_modules\node-sass\vendor\win32-x64-48\bindi ng.node Caching binary to C:\Users\toto\AppData\Roaming\npm-cache\node-sass\4.5.3\win3
2-x64-48_binding.node

tslerp@1.0.5 postinstall C:...\node_modules\tslerp typings install

typings WARN enoent Path "C:...\node_modules\tslerp\typings.json" is missing

`-- (No dependencies)

node-sass@4.5.3 postinstall C:\Users\aviale\Documents\dev\workspace\PlaceDesFa
milles\PlaceDesFamilles\PlaceDesFamillesFront\node_modules\node-sass node scripts/build.js

Binary found at C:\Users\aviale\Documents\dev\workspace\PlaceDesFamilles\PlaceDe
sFamilles\PlaceDesFamillesFront\node_modules\node-sass\vendor\win32-x64-48\bindi ng.node Testing binary Binary is fine

ng2-google-recaptcha@1.1.0 postinstall C:...\node_modules\ng2-google -recaptcha typings install

typings WARN enoent Path "C:...\node_modules\ng2-google-recaptcha\typings.json" is missing

`-- (No dependencies)

place-des-familles-front@0.0.0 C:... +-- @angular/cli@1.0.0-beta.31 | +-- @ngtools/json-schema@1.0.3 | +-- @ngtools/webpack@1.2.9 | | +-- enhanced-resolve@3.1.0 | | +-- loader-utils@0.2.17 | | | +-- big.js@3.1.3 | | | +-- emojis-list@2.1.0 | | | -- json5@0.5.1 | |-- magic-string@0.19.1 | | -- vlq@0.2.2 | +-- async@2.4.1 | +-- autoprefixer@6.7.7 | | +-- browserslist@1.7.7 | | |-- electron-to-chromium@1.3.14 | | +-- caniuse-db@1.0.30000686 | | +-- normalize-range@0.1.2 | | +-- num2fraction@1.2.2 | | +-- postcss@5.2.17 | | | +-- js-base64@2.1.9 | | | -- supports-color@3.2.3 | |-- postcss-value-parser@3.3.0 | +-- chalk@1.1.3 | | +-- ansi-styles@2.2.1 | | +-- escape-string-regexp@1.0.5 | | +-- has-ansi@2.0.0 | | | -- ansi-regex@2.1.1 | | +-- strip-ansi@3.0.1 | |-- supports-color@2.0.0 | +-- common-tags@1.4.0 | | -- babel-runtime@6.23.0 | |-- regenerator-runtime@0.10.5 | +-- css-loader@0.26.4 | | +-- loader-utils@1.1.0 | | +-- lodash.camelcase@4.3.0 | | +-- object-assign@4.1.1 | | +-- postcss-modules-extract-imports@1.1.0 | | | -- postcss@6.0.2 | | |-- supports-color@3.2.3 | | +-- postcss-modules-local-by-default@1.2.0 | | | -- postcss@6.0.2 | | | -- supports-color@3.2.3 | | +-- postcss-modules-scope@1.1.0 | | | -- postcss@6.0.2 | | |-- supports-color@3.2.3 | | +-- postcss-modules-values@1.3.0 | | | +-- icss-replace-symbols@1.1.0 | | | -- postcss@6.0.2 | | |-- supports-color@3.2.3 | | -- source-list-map@0.1.8 | +-- cssnano@3.10.0 | | +-- decamelize@1.2.0 | | +-- defined@1.0.0 | | +-- has@1.0.1 | | |-- function-bind@1.1.0 | | +-- postcss-calc@5.3.1 | | | +-- postcss-message-helpers@2.0.0 | | | -- reduce-css-calc@1.3.0 | | | +-- balanced-match@0.4.2 | | | +-- math-expression-evaluator@1.2.17 | | |-- reduce-function-call@1.0.2 | | | -- balanced-match@0.4.2 | | +-- postcss-colormin@2.2.2 | | |-- colormin@1.1.2 | | | +-- color@0.11.4 | | | | +-- color-convert@1.9.0 | | | | | -- color-name@1.1.2 | | | |-- color-string@0.3.0 | | | -- css-color-names@0.0.4 | | +-- 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htmlparser2@3.3.0 | | | | | +-- domelementtype@1.3.0 | | | | | +-- domhandler@2.1.0 | | | | | +-- domutils@1.1.6 | | | | | -- readable-stream@1.0.34 | | | | | +-- isarray@0.0.1 | | | | |-- string_decoder@0.10.31 | | | | -- utila@0.3.3 | | |-- utila@0.4.0 | | -- toposort@1.0.3 | +-- inflection@1.12.0 | +-- inquirer@3.1.0 | | +-- ansi-escapes@2.0.0 | | +-- cli-cursor@2.1.0 | | |-- restore- ... UNMET PEER DEPENDENCY @angular/platform-browser@4.2.2 | +-- @types/fullcalendar@2.7.43 | -- UNMET PEER DEPENDENCY zone.js@^0.8.4 +-- codelyzer@2.0.1 | +-- app-root-path@2.0.1 | +-- css-selector-tokenizer@0.7.0 | | +-- cssesc@0.1.0 | | +-- fastparse@1.1.1 | |-- regexpu-core@1.0.0 | | +-- regenerate@1.3.2 | | +-- regjsgen@0.2.0 | | -- regjsparser@0.1.5 | |-- jsesc@0.5.0 | +-- cssauron@1.4.0 | +-- semver-dsl@1.0.1 | | -- semver@5.3.0 | +-- source-map@0.5.6 |-- sprintf-js@1.0.3 +-- core-js@2.4.1 +-- fullcalendar@3.4.0 +-- jasmine-core@2.5.2 +-- jasmine-spec-reporter@2.5.0 | -- colors@1.1.2 +-- jquery@3.2.1 +-- karma@1.2.0 | +-- bluebird@3.5.0 | +-- body-parser@1.17.2 | | +-- bytes@2.4.0 | | +-- content-type@1.0.2 | | +-- debug@2.6.7 | | +-- depd@1.1.0 | | +-- http-errors@1.6.1 | | +-- iconv-lite@0.4.15 | | +-- on-finished@2.3.0 | | |-- ee-first@1.1.1 | | +-- qs@6.4.0 | | +-- raw-body@2.2.0 | | | +-- bytes@2.4.0 | | | +-- iconv-lite@0.4.15 | | | -- unpipe@1.0.0 | |-- type-is@1.6.15 | | -- 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is-retry-allowed@1.1.0 | | | +-- lowercase-keys@1.0.0 | | | +-- timed-out@4.0.1 | | | +-- unzip-response@2.0.1 | | | -- url-parse-lax@1.0.0 | | +-- registry-auth-token@3.3.1 | | +-- registry-url@3.1.0 | |-- semver@5.3.0 | +-- semver-diff@2.1.0 | | -- semver@5.0.3 |-- xdg-basedir@3.0.0 +-- typescript@2.0.10 +-- typings@2.1.0 | +-- archy@1.0.0 | +-- cli-truncate@0.2.1 | | +-- slice-ansi@0.0.4 | | `-- string-width@1.0.2 | | +--

exit-hook@1.1.1 | | -- onetime@1.1.0 | +-- promise-finally@3.0.0 | +-- typings-core@2.3.3 | | +-- array-uniq@1.0.3 | | +-- detect-indent@5.0.0 | | +-- invariant@2.2.2 | | |-- loose-envify@1.3.1 | | +-- is-absolute@0.2.6 | | | +-- is-relative@0.2.1 | | | | -- is-unc-path@0.1.2 | | | |-- unc-path-regex@0.1.2 | | | -- is-windows@0.2.0 | | +-- jspm-config@0.3.4 | | +-- lockfile@1.0.3 | | +-- make-error-cause@1.2.2 | | +-- object.pick@1.2.0 | | |-- isobject@2.1.0 | | +-- popsicle@9.1.0 | | | +-- concat-stream@1.6.0 | | | | -- typedarray@0.0.6 | | |-- form-data@2.2.0 | | +-- popsicle-proxy-agent@3.0.0 | | | -- http-proxy-agent@1.0.0 | | +-- popsicle-retry@3.2.1 | | +-- popsicle-rewrite@1.0.0 | | +-- popsicle-status@2.0.1 | | +-- rc@1.2.1 | | |-- deep-extend@0.4.2 | | +-- sort-keys@1.1.2 | | | -- is-plain-obj@1.1.0 | | +-- string-template@1.0.0 | | +-- strip-bom@3.0.0 | | +-- thenify@3.3.0 | | +-- throat@3.2.0 | | +-- touch@1.0.0 | | |-- nopt@1.0.10 | | -- zip-object@0.1.0 | +-- update-notifier@1.0.3 | | +-- boxen@0.6.0 | | | +-- ansi-align@1.1.0 | | | +-- camelcase@2.1.1 | | | +-- filled-array@1.1.0 | | |-- repeating@2.0.1 | | | -- is-finite@1.0.2 | | +-- configstore@2.1.0 | | | +-- dot-prop@3.0.0 | | |-- write-file-atomic@1.3.4 | | +-- latest-version@2.0.0 | | | -- package-json@2.4.0 | | | +-- got@5.7.1 | | | | +-- duplexer2@0.1.4 | | | | +-- node-status-codes@1.0.0 | | | | +-- read-all-stream@3.1.0 | | | | +-- timed-out@3.1.3 | | | |-- unzip-response@1.0.2 | | | -- semver@5.3.0 | | +-- lazy-req@1.1.0 | |-- xdg-basedir@2.0.0 | -- wordwrap@1.0.0-- zone.js@0.7.8

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules\ch
okidar\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@
1.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}
) npm WARN @angular/forms@4.2.2 requires a peer of @angular/platform-browser@4.2.2
but none was installed. npm WARN @angular/core@4.2.2 requires a peer of zone.js@^0.8.4 but none was inst
alled.

Here is my app.component.ts:

My Webpack is compiling properly on my development environment, but once I deploy to Heroku, I'm receiving an error that Chart.js isn't a module-