refactor(common): Debug-print spans more compactly

[Kyuuhachi]

Description:

dbg!() output on ASTs is kinda verbose,

ExprStmt {
    span: Span {
        lo: BytePos(
            37,
        ),
        hi: BytePos(
            50,
        ),
        ctxt: #0,
    },
    expr: Lit(
        Str(
            Str {
                span: Span {
                    lo: BytePos(
                        37,
                    ),
                    hi: BytePos(
                        49,
                    ),
                    ctxt: #0,
                },
                value: "use strict",
                raw: Some(
                    "\"use strict\"",
                ),
            },
        ),
    ),
}

A lot of the space is wasted on spans — 9 lines per span, even though it's pretty much unimportant cruft. This PR changes that to just one line per span:

ExprStmt {
    span: 37..50#0,
    expr: Lit(
        Str(
            Str {
                span: 37..49#0,
                value: "use strict",
                raw: Some(
                    "\"use strict\"",
                ),
            },
        ),
    ),
}

While not a statistically meaningful measurement, in my tests (sample size = 1) this change reduces the dbg!() of a 1103-byte script from 5597 to 2885 lines, which is a 48% reduction. In {:?} mode it goes from 40034 to 25457 chars, or 37% reduction.

BREAKING CHANGE:

None, Debug output is generally not considered stable.

Related issue (if exists):

None known.

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[Kyuuhachi]

This fails a bunch of tests under crates/jsdoc/tests/fixtures/*.debug, as well as crates/swc_ecma_parser/tests/shifted/empty-with-comments/input.ts.comments and crates/swc_ecma_parser/tests/typescript/custom/issue-236/input.ts.stdout. Since these files contain dbg!() output, it is very reasonable that they fail, but I'm not sure what to do about it. Is there some command to update the reference files to current values?

[kdy1]

UPDATE=1 cargo test should do the trick

[magic-akari]

This will break https://swc-ast.vercel.app which is a tool that heavily relies on span output.
I will update it after this PR get merged.

[Kyuuhachi]

Took a while to figure out how to run the tests, but there we go. Those jsdoc fixtures went from 48093 to 17173 lines, a 64% reduction. Also the input.ts.stdout seemed to be unused, so I just deleted it.

Massively changes the size of this PR though. Funny how that works sometimes.

[swc-bot]

Automated review comment generated by auto-rebase script

[swc-bot]

Automated review comment generated by auto-rebase script

[kdy1]

swc-bump:

• swc_common