First pass internal benchkmarks.

Author: asg017

benchmark-internal/README.md

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+# `observable-prerender` Internal Benchmarks

benchmark-internal/basics.md

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+| Command | Mean [s] | Min [s] | Max [s] | Relative |
+|:---|---:|---:|---:|---:|
+| `observable-prerender @d3/bar-chart chart -o ./out/bar-chart.svg` | 1.091 ± 0.220 | 0.960 | 1.710 | 1.00 |
+| `observable-prerender @d3/bar-chart chart -o ./out/bar-chart.png` | 1.252 ± 0.034 | 1.211 | 1.313 | 1.15 ± 0.23 |
+| `observable-prerender @d3/bivariate-choropleth chart -o ./out/choropleth-chart.svg` | 1.337 ± 0.267 | 1.220 | 2.094 | 1.23 ± 0.35 |
+| `observable-prerender @d3/bivariate-choropleth chart -o ./out/choropleth-chart.png` | 1.487 ± 0.027 | 1.448 | 1.541 | 1.36 ± 0.28 |
+| `observable-prerender @asg017/covid19-cases-in-whittier-california chart -o ./out/whittier-chart.svg` | 1.717 ± 0.452 | 1.516 | 2.995 | 1.57 ± 0.52 |
+| `observable-prerender @asg017/covid19-cases-in-whittier-california chart -o ./out/whittier-chart.png` | 2.067 ± 0.422 | 1.796 | 3.116 | 1.90 ± 0.54 |

benchmark-internal/benchmark-internal.sh

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+#!/bin/bash
+BASEDIR=$(dirname "$0")
+OUTDIR="$BASEDIR/out"
+
+PATH="$PATH:$BASEDIR/../bin"
+
+mkdir -p $OUTDIR
+
+hyperfine --export-markdown basics.md \
+    "observable-prerender @d3/bar-chart chart -o $OUTDIR/bar-chart.svg" \
+    "observable-prerender @d3/bar-chart chart -o $OUTDIR/bar-chart.png" \
+    "observable-prerender @d3/bivariate-choropleth chart -o $OUTDIR/choropleth-chart.svg" \
+    "observable-prerender @d3/bivariate-choropleth chart -o $OUTDIR/choropleth-chart.png" \
+    "observable-prerender @asg017/covid19-cases-in-whittier-california chart -o $OUTDIR/whittier-chart.svg" \
+    "observable-prerender @asg017/covid19-cases-in-whittier-california chart -o $OUTDIR/whittier-chart.png"