Fixed GitHub Actions and addressed CodeQL issues

.github/workflows/image.yml

@@ -3,7 +3,6 @@ on:
     push:
         branches:
             - typescript
-            - docker
 
 jobs:
     analyze:
@@ -16,9 +15,12 @@ jobs:
                   fetch-depth: 2
 
             - name: Setup Node.JS
-              uses: actions/setup-node@v2-beta
+              uses: actions/setup-node@v2
               with:
-                  node-version: "12"
+                  node-version: "14"
+            # https://github.com/npm/cli/issues/558#issuecomment-580018468
+            # Error: "npm ERR! fsevents not accessible from jest-haste-map"
+            # (supposed to just be a warning b/c optional dependency, but CI environment causes it to fail)
             - run: npm ci
 
             - name: Build codebase

Dockerfile

@@ -1,4 +1,69 @@
-FROM node:current-alpine
+###############
+# Solution #1 #
+###############
+# https://github.com/geekduck/docker-node-canvas
+# Took 20m 55s
+
+#FROM node:12
+#
+#RUN apt-get update \
+#	&& apt-get install -qq build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev
+#
+#RUN mkdir -p /opt/node/js \
+#	&& cd /opt/node \
+#	&& npm i canvas
+#
+#WORKDIR /opt/node/js
+#
+#ENTRYPOINT ["node"]
+
+###############
+# Solution #2 #
+###############
+# https://github.com/Automattic/node-canvas/issues/729#issuecomment-352991456
+# Took 22m 50s
+
+#FROM ubuntu:xenial
+#
+#RUN apt-get update && apt-get install -y \
+#	curl \
+#	git
+#
+#RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - \
+#	&& curl -sL https://deb.nodesource.com/setup_8.x | bash - \
+#	&& curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
+#	&& echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
+#
+#RUN apt-get update && apt-get install -y \
+#	nodejs \
+#	yarn \
+#	libcairo2-dev \
+#	libjpeg-dev \
+#	libpango1.0-dev \
+#	libgif-dev \
+#	libpng-dev \
+#	build-essential \
+#	g++
+
+###############
+# Solution #3 #
+###############
+# https://github.com/Automattic/node-canvas/issues/866#issuecomment-330001221
+# Took 7m 29s
+
+FROM node:10.16.0-alpine
+FROM mhart/alpine-node:8.5.0
+
+RUN apk add --no-cache \
+	build-base \
+	g++ \
+	cairo-dev \
+	jpeg-dev \
+	pango-dev \
+	bash \
+	imagemagick
+
+# The rest of the commands to execute
 
 COPY . .
 

package.json

@@ -43,6 +43,9 @@
         "tsc-watch": "^4.2.9",
         "typescript": "^3.9.7"
     },
+    "optionalDependencies": {
+        "fsevents": "^2.1.2"
+    },
     "author": "Keanu Timmermans",
     "license": "MIT",
     "keywords": [

src/lib.ts

@@ -139,12 +139,16 @@ export interface GenericJSON {
     [key: string]: any;
 }
 
+// In order to define a file to write to while also not:
+// - Using the delete operator (which doesn't work on properties which cannot be undefined)
+// - Assigning it first then using Object.defineProperty (which raises a flag on CodeQL)
+// A non-null assertion is used on the class property to say that it'll definitely be assigned.
 export abstract class GenericStructure {
-    private __meta__ = "generic";
+    private __meta__!: string;
 
     constructor(tag?: string) {
-        this.__meta__ = tag || this.__meta__;
         Object.defineProperty(this, "__meta__", {
+            value: tag || "generic",
             enumerable: false
         });
     }