maint/build ~ (package.json) add verbose test support and revise 'pre…

…release'

README.md

@@ -249,7 +249,7 @@ lint:lint           check for code 'lint' (using `eslint`)
 lint:markdown       check for markdown errors (using `remark`)
 lint:spell          check for spelling errors (using `cspell`)
 lint:style          check for format imperfections (using `prettier`)
-prerelease          clean, rebuild, and fully test prior to publish/release
+prerelease          clean, rebuild, and fully test (useful prior to publish/release)
 realclean           remove all generated files
 rebuild             clean and (re-)build project
 rebuild:all         clean and fully reconstruct project distribution
@@ -262,6 +262,7 @@ test:types          test for type declaration errors (using `tsd`)
 update              update/prepare for distribution [alias: 'dist']
 update:changelog    update CHANGELOG (using `git changelog ...`)
 update:dist         update distribution content
+verify              fully (and verbosely) test package
 ```
 
 #### Packaging & Publishing

package.json

@@ -97,8 +97,8 @@
 		"lint:spell": "cspell {eg,examples,src,test}/**/* CHANGELOG{,.md,.mkd} README{,.md,.mkd} --no-summary --config \".vscode/cspell.json\"",
 		"# lint:style # check for format imperfections (using `prettier`)": "",
 		"lint:style": "prettier . --check --loglevel warn",
-		"# prerelease # clean, rebuild, and fully test prior to publish/release": "",
-		"prerelease": "run-s prepublishOnly",
+		"# prerelease # clean, rebuild, and fully test (useful prior to publish/release)": "",
+		"prerelease": "run-s clean verify",
 		"# realclean # remove all generated files": "",
 		"realclean": "run-s clean && rimraf coverage .nyc_output",
 		"# rebuild # clean and (re-)build project": "",
@@ -119,7 +119,7 @@
 		"# test # test package": "",
 		"test": "run-s --silent lint update:dist && run-p test:*",
 		"# test:code # test package code": "",
-		"test:code": "run-s --silent +:max-node-8 && ava || ( run-s --silent +:min-node-10 && nyc --silent ava )",
+		"test:code": "run-s --silent +:max-node-8 && cross-env-shell ava $npm_config_ava || ( run-s --silent +:min-node-10 && cross-env-shell nyc --silent ava $npm_config_ava )",
 		"# test:types # test for type declaration errors (using `tsd`)": "",
 		"test:types": "run-s --silent +:max-node-8 && shx echo \"[test:types] WARN Type testing skipped [for NodeJS < v10]\" 1>&2 || tsd",
 		"# update # update/prepare for distribution [alias: 'dist']": "",
@@ -128,6 +128,8 @@
 		"update:changelog": "run-s --silent _:update:changelog && git diff --quiet --exit-code CHANGELOG.mkd || shx echo \"[update] info CHANGELOG updated\"",
 		"# update:dist # update distribution content": "",
 		"update:dist": "run-s --silent build && exec-if-updated --source \"build/**\" --target \"dist/**\" --target build/.targets/update-dist.succeeded \"run-s --silent _:update:dist:rebuild\"",
+		"# verify # fully (and verbosely) test package": "",
+		"verify": "cross-env npm_config_test_dist=true npm_config_ava=--verbose run-s test",
 		"## +:... == sub-scripts (may run 'visibly', but not user-facing)": "",
 		"+:coverage": "run-s build test:code && is-ci && run-s cov:send || run-s cov:view",
 		"+:max-node-8": "is-node-not-modern 10",