I am trying to process a package.json file.
open package.json | get scripts
This gives all the entries under scripts property as a nushell record.
╭──────────────────┬──────────────────────────────────────────────────────────────────────────────────────╮
│ postbuild │ scripts/post-build.sh │
│ ng │ ng │
│ start │ npm run prebuild && ng serve │
│ start:local │ ng serve -c local │
│ prebuild │ rm -rf dist && rm -rf dist.zip && ts-node -O '{"module": "commonjs"}' git.version.ts │
│ prebuild2 │ ts-node -O '{"module": "commonjs"}' git.version.ts │
│ build │ ng build │
│ build:vnv3api │ npm run prebuild && ng build -c vnv3api && npm run postbuild │
│ build:vnv2web │ npm run prebuild && ng build -c vnv2web && npm run postbuild │
│ build:vnv3web │ npm run prebuild && ng build -c vnv3web && npm run postbuild │
│ build:vnv1web │ npm run prebuild && ng build -c vnv1web && npm run postbuild │
│ build:stageweb │ npm run prebuild && ng build -c stageweb --stats-json && npm run postbuild │
│ build:prodbeta │ npm run prebuild && ng build -c prodbeta && npm run postbuild │
│ build:production │ npm run prebuild && ng build -c production && npm run postbuild │
│ build:local │ npm run prebuild && ng build -c local && npm run postbuild │
│ test │ ng test │
│ lint │ tslint -p . │
│ lint_and_fix │ tslint -p . --fix │
│ e2e │ CHROME_MODE=headless ng e2e --dev-server-target= │
│ e2e:debug │ ng e2e --dev-server-target= │
╰──────────────────┴──────────────────────────────────────────────────────────────────────────────────────╯
I want to filter the keys/rows which start with build I want to perform something like;
open package.json | get scripts | select build*
Expected output:
╭──────────────────┬──────────────────────────────────────────────────────────────────────────────────────╮ │
│ build │ ng build │
│ build:vnv3api │ npm run prebuild && ng build -c vnv3api && npm run postbuild │
│ build:vnv2web │ npm run prebuild && ng build -c vnv2web && npm run postbuild │
│ build:vnv3web │ npm run prebuild && ng build -c vnv3web && npm run postbuild │
│ build:vnv1web │ npm run prebuild && ng build -c vnv1web && npm run postbuild │
│ build:stageweb │ npm run prebuild && ng build -c stageweb --stats-json && npm run postbuild │
│ build:prodbeta │ npm run prebuild && ng build -c prodbeta && npm run postbuild │
│ build:production │ npm run prebuild && ng build -c production && npm run postbuild │
│ build:local │ npm run prebuild && ng build -c local && npm run postbuild │ │
╰──────────────────┴──────────────────────────────────────────────────────────────────────────────────────╯
For the example you provided, you can transpose the record to a table, select the rows matching the desired pattern, and (if needed) transpose it back to a record:
open package.json
| get scripts
| transpose key value
| where key =~ '^build'
| transpose -dr
transpose key value converts the record to a table with the columns named key and valuewhere clause with =~ is a regex pattern selecting any key that starts with "build"transpose -dr converts it back to a record.There might be some other patterns that work here, but I believe they are probably all going to involve a transpose at some point, so this may be the most expediate.